In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 6249999 | Apparatus for turning over individual boards assembled as a stack, preferably for leafing the program boards of a music box (juke box) Apparatus for turning over individual boards assembled as a stack, preferably for leafing the program boards of a music box (juke box) is provided, in which boards may be rotated around mutually parallel pivot axes lying in a plane, pivoting bilaterally w... | 06/26/2001 |
| 6240058 | Disk-changing unit with modular design The invention concerns a disk-changing unit comprising a tower housing (1) in which is fitted at least one interchangeable disk magazine (13), at least one disk drive (14), if necessary a disk-loading/ejecting drawer (12), a transporting device (17) for m... | 05/29/2001 |
| 6039649 | Money-operated entertainment machine A money-operated entertainment machine is provided with a game device including a plurality of display components (5) which are illuminated according to specific payoffs. The entertainment machine is further provided with a computer-controlled unit for co... | 03/21/2000 |
| 6020705 | Process and equipment for positioning a step motor for a disk playback, recording and/or extracting machine A playback, recording and/or extracting machine for disks designed as information carriers has opposite disk magazines that receive disk-holders or at least one disk in horizontally superimposed disk-receiving compartments and a computer-controlled transp... | 02/01/2000 |
| 5898365 | Device for checking the closed state of a door mounted on an object, especially on a motor vehicle The invention relates to a device for checking the closed state of a door mounted on an object (1), especially on a motor vehicle, by using an electronic key (2). The electronic key (2) and the object (1) are each fitted with intercommunicating transmitte... | 04/27/1999 |
| 5882262 | Program-controlled entertainment and game device A programmable game machine has a housing, a display unit (4) linked to the housing, preferably mounted therein, control elements (6) associated to the housing, a control unit (16) provided in the housing, and a memory device (36, 38) associated with the ... | 03/16/1999 |
| 5860649 | Coin-operated, time-controlled table game apparatus A coin-operated, time-controlled table game apparatus includes a plurality of movable rods which support respective playing pieces; and a locking device including at least one locking beam which can be moved up and down, and which supports at least one pi... | 01/19/1999 |
| 5857912 | System for playing on several dart game apparatuses set up remotely from one another The subject matter of the invention is a system allowing play on several games machines, in particular coin-operated machines, set up remotely from each other. The system comprises at least two games machines (2A, 2B) set up in different locations (A, B) ... | 01/12/1999 |
| 5841744 | Device for playing, recording, and issuing discs A transport device (10) conveys a disc holder (7) with a disc (1) between a disc magazine (4) and another disc magazine (4), between a disc magazine (4) and a running gear (5), or between a disc magazine (4) and a disc loading and issuing slide (11). Two ... | 11/24/1998 |
| 5818802 | Disc player with rigid gripper arm and sled A disc player has two opposite disc magazines with a plurality of disc holders which each receive a disc and are arranged one above the other in compartments. A transport arrangement movable in the direction of the stack of discs in the magazine conveys a... | 10/06/1998 |
| 5785316 | Money-operated slot machine A money operated slot machine for indicating a score by displaying one of symbols and symbol combinations includes: a housing; a plurality of rotatable drums disposed in the housing and including respective drum casings, each drum casing defining compartm... | 07/28/1998 |
| 5757761 | Disc player for player discs disposed in cassettes defining a window opening and closeable by a sliding element A combination includes a plurality of disc assemblies, each having: a disc; a cassette having a window and a sliding element adapted to open and close the window, the disc being disposed in the cassette so as to be accessible by a playback unit of a disc ... | 05/26/1998 |
| 5742893 | Music-playing system for a motor vehicle A music-playing system for a motor vehicle that is equipped with an antenna includes a radio communications unit in the motor vehicle, an input unit for operating the radio communications unit, and a music-reproduction unit having at least one loudspeaker... | 04/21/1998 |
| 5735379 | Money-operated entertainment device A computer-controlled entertainment device operated with at least one of money and money equivalents includes: a housing; a plurality of viewing windows disposed on the housing; a symbol game arrangement for displaying winning and losing symbol combinatio... | 04/07/1998 |
| 5691964 | Music playing system with decentralized units A music playing system includes a number of music playback units with playback changer devices, coding units, and ISDN cards. Each of the music playback units is provided with playable pieces of music. There is at least one input unit by means of which th... | 11/25/1997 |
| 5614942 | Device for the control of the shutter of a CCD camera supplied with light from a light source In the case of a device for the control of the shutter of a CCD camera supplied with preferably monochromatic light such as laser light from a light source, and more particularly for the control of the shutter of a CCD camera of a light ray marksmanship s... | 03/25/1997 |
| 5562549 | Automatic bowling alley An automatic bowling alley has a bowling lane with two ends. The bowling alley further includes a pin setup frame provided at one end of the bowling lane for handling a plurality of bowling pins. The pin setup frame includes a pin magazine for retaining a... | 10/08/1996 |
| 5557086 | Game machine system with money-processing station A game machine system comprising a plurality of game machines networked with one another. Each of the game machines includes: a reading device for reading an encoded user card; and a display for displaying a credit value read from the encoded user card; a... | 09/17/1996 |
| 5552839 | Projection system for entertainment and game apparatus The present invention relates to a video system for entertainment and game apparatus. The video system includes a data carrier on which the game is stored. Video informations (pictures) stored on the data carrier are displayed on a display unit. By a lens... | 09/03/1996 |
| 5539712 | Lifting and lowering device for a record playback unit in a record playing device A record playing device includes a record magazine that contains record holders with records located in superimposed storage compartments. A record playback unit is located adjacent the record magazine and a travelling transport device conveys a desired r... | 07/23/1996 |
| 5537371 | Disk play-back device with removable disk magazines A disk play-back device includes a housing having an upper and a lower wall each having a respective opening. At least one exchangeable disk magazine is provided that contains superposed disk holders and that is insertable into the housing between the upp... | 07/16/1996 |
| 5513846 | Coin-operated entertainment machine A coin operated entertainment machine includes a housing, viewing windows disposed on the housing, and rotating bodies disposed within the housing behind the viewing windows. The rotating bodies have symbols thereon which can be displayed behind the viewi... | 05/07/1996 |
| 5515347 | Arrangement for selecting titles from a storage media containing a number of recording titles in a magazine A system which enables the titles of recordings to be selected from storage media containing a number of titles and held in a magazine, in particular the titles of CDs housed in a number of CD boxes. The storage media include a list of the recording title... | 05/07/1996 |
| 5480158 | Entertainment installation An entertainment installation includes at least one entertainment device defining a game area and having first actuation members thereon. A video recording device is associated with the entertainment device for monitoring the game area thereof. A projecto... | 01/02/1996 |
| 5414679 | Disc player having a transporting device for moving a disc and disc holder A disc player has a playback unit that includes a turntable having a driveshaft. At least one disc storage magazine having a plurality of storage compartments and a plurality of superposed disc holders stored therein is provided. Each disc holder accommod... | 05/09/1995 |
| 5413357 | Program controlled entertainment and game apparatus The present invention relates to a program controlled entertainment and game device which includes a housing, a display unit connected with the housing and preferably provided within the housing, operating elements associated with the housing, and a playb... | 05/09/1995 |
| 5392892 | Device for the measurement of the diameter of circular objects For the measurement of the diameter of coins (1) or other circular objects, such coins or other objects pass the guide channel at substantially the same velocity. In a lateral wall of the guide channel, at least two photoelectric detectors (3, 4) are arra... | 02/28/1995 |
| 5383546 | Device for the detection of a foreign body in a coin channel For detecting a foreign body, as, for instance, a thread (3) or a wire in a coin channel (10) or for the recognition of the edge outline of coins moving along the guide channel, a photoelectric detector (1, 2) monitors the coin channel (10) (FIG. 1).... | 01/24/1995 |
| 5370306 | Coin-operated entertainment machine A coin-operated entertainment machine includes a central control unit which permits the machine to be used at certain hours of the day or at certain days of the week at a reduced cost. In addition, the central control unit controls the machine in such a w... | 12/06/1994 |
| 5368147 | Testing device for bank notes A testing device for bank notes, or similar instruments of payment in sheet form for automatic vending machines, has a testing channel (20) with a transport device (7) and scanning devices for recognizing and checking the authenticity of the bank note (3)... | 11/29/1994 |
| 5355602 | Display device A display device, particularly for the display of music titles in a jukebox includes a frame housing, two juxtaposed stacks of information carriers arranged vertically one behind the other, with a front information carrier of a first one of the stacks of ... | 10/18/1994 |
| 5341350 | Coin operated jukebox device using data communication network A coin-operated music playing machine or jukebox includes a coin unit, a viewing screen, an input keyboard, and at least one loudspeaker. The jukebox is connected to a central music store via a remote data transmission line, preferably an ISDN line. The j... | 08/23/1994 |
| 5314195 | Dart game A dart game includes a target board (22) with segments which are movably mounted between radial ribs (24) and concentric ribs (26) to receive the darts. Each segment has a switch which is actuated when a dart hits the segment and which is connected to a h... | 05/24/1994 |
| 5292135 | Dart game A darts target for a game of darts has mobile segments marked with different scores and provided with holes for receiving the darts and is articulated inside a front door of a housing. When a dart strikes the segments, which are prevented from moving forw... | 03/08/1994 |