"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7406791 | System and method of displaying a notice tag for out-of-service equipment A notice tag marks out-of-service equipment, such as a fire hydrant. A front flat portion of the notice tag has an opening for mounting to the equipment. The opening may have a lip to pressure fit to a surface of the equipment, and a key for proper orientation to th... | 08/05/2008 |
| 7383654 | Door handle with interchangeable graphic display Apparatus and method for providing a door handle adapted to receive interchangeable display inserts. The door handle includes a handle body adapted to be coupled to a door of an enclosure. A receiving space is provided within the handle body for exchangeably receivi... | 06/10/2008 |
| 7269881 | Variable alignment handle A handle for attachment to a rotational shaft, the handle comprising a lever handle, for attachment to the rotational shaft for aiding application of torque to the shaft, and an alignment boss, separate from the lever handle, for attaching the lever handle to the sh... | 09/18/2007 |
| 7185929 | Door knob with light-emitting location indicator and door A door knob with a light-emitting location indicator comprises a knob designed for placement on a door, for being grasped by the hand of a user for opening the door. The knob comprises translucent material. One or more objects comprising light-emitting material that... | 03/06/2007 |
| 7111365 | Knob with decorative ring and snap on cap A multi-piece knob having a cylindrical tubular plastic body with a central hub and a peripheral wall. An annular end wall extends from the peripheral wall and terminates radially short of the central hub to define a passage into the tubular body and around the hub.... | 09/26/2006 |
| 6978565 | Device and method for communication with housekeeping services A device for communicating a hotel guest's instructions to hotel housekeeping services, and method for such is provided. The communication device provides a means for the guest to indicate whether or not to clean the room or other like instructions or commands. Addi... | 12/27/2005 |
| 6976977 | Vacuum setting and indication system for a drainage device A drainage device comprising an improved vacuum regulator assembly is disclosed which includes an adjustable knob for indicating the degree of vacuum being applied to the device from a number of incident viewing angles. Similarly, a vacuum indicator assembly is prov... | 12/20/2005 |
| 6948272 | Door handle with interchangeable graphic display Apparatus and method for providing a door handle adapted to receive interchangeable display inserts. The door handle includes a handle body adapted to be coupled to a door of an enclosure. A receiving space is provided within the handle body for exchangeably receivi... | 09/27/2005 |
| 6937229 | Keycap for displaying a plurality of indicia A keycap is used to display a plurality of indicia, such as Braille, pictures, etc., for use with a keyboard that interacts with an electronic device, such as a computer. The keycap includes at least one engagement member, for removably engaging with at least one ac... | 08/30/2005 |
| 6932695 | Vane for an air outlet Apparatus for controlling air flow in a ventilating system of an automotive vehicle includes a series of interconnected vanes with a control knob on one of the vanes for adjusting the vanes. A chrome-plated insert fits into a slot in the knob. A rubber overlay cover... | 08/23/2005 |
| 6643964 | Hanger for a lever-type door handle and method of use A hanger for a lever-type door handle is constructed such that the hanger will not fall off of the handle when the door is opened and closed. The hanger has a first section having a first hole and a second section having a second hole. The first and secon... | 11/11/2003 |
| 6588134 | Hanging sign and method A hanging sign is provided for displaying messages. The sign may include a pair of walls that face in generally opposite directions so that messages can be displayed in two general directions, and a hook for hanging the walls from a support, such as a han... | 07/08/2003 |
| 6507284 | Enclosure sign device The present invention provides an enclosure sign apparatus for unavoidable viewing of a sign before manipulation of an entryway opening device. The enclosure sign apparatus includes at least one side surface extending out as least as far as the entryway o... | 01/14/2003 |
| 6293434 | Apparatus for dispensing of bulk product A bulk vending apparatus for dispensing a user-determined amount of product includes a rack unit having a plurality of support structures capable of extending out from the rack unit, a plurality of dispensing units each containing a product for dispensing... | 09/25/2001 |
| 6219949 | Door reminder A door reminder for hanging on a doorknob for delivering a message comprising a hanger, a flap and at least one electronic device to be actuated by the flap. The hanger is provided with a hanger opening for hanging the door reminder on the shank of the do... | 04/24/2001 |
| 6062438 | Apparatus for dispensing of bulk product A bulk vending apparatus for dispensing a user-determined amount of product stored in bulk includes a storage portion for storing loose product and a removable dispensing barrel located within the bottom of the storage portion. The dispensing barrel inclu... | 05/16/2000 |
| 6052929 | Mnemonic marking system for fluid valves and the like A mnemonic temperature marking system for fluid valves, especially of the type used in bathing vessels such as bathtubs and showers. Any user can easily, quickly, and accurately set the valve so that water of the desired temperature will flow when the val... | 04/25/2000 |
| 5724910 | Signalling device An apparatus, system and method for emergency under-door signalling includes a paddle in the form of an elongate strip of stiff plastic material bearing on its surface a phosphorescent marker. The strip may be slid under the door of an apartment or other ... | 03/10/1998 |
| 5671558 | Flush valve advertising display device An advertisement display device which is removably secured to a toilet flush valve cap. The device is comprised of a clear plastic valve cap cover which receives advertisements therein and is then placed over the valve cap. The device may be secured onto ... | 09/30/1997 |
| 5499427 | Drawer knob assembly A knob assembly for drawers and the like comprises an integral knob having a flat base member, a longitudinally-extending stem connected at one end to the base member and a threaded bore opening in a second stem end for receiving a screw fastener therein.... | 03/19/1996 |
| 5448842 | Enclosure sign device Enclosure sign device for unavoidable viewing of a sign before manipulation f an entryway opening device. An enclosure of an entryway opening device includes at least one side surface extending out at least as far as the entryway opening device, a back sur... | 09/12/1995 |
| 5412547 | Illuminatable rechargeable display device A lightable display device including a base, a handle including a light source for illuminating the display device, a rechargeable battery coupled to the light source for energizing the light source, and means for effecting the recharging of the rechargea... | 05/02/1995 |
| 5216978 | Feline toy and exerciser A feline toy comprised of a body with a vertical and horizontal portion which when mounted over an existing door knob will provide a platform from which a target may be tethered.... | 06/08/1993 |
| 4926573 | Cover for smoking accessory Disclosed are embodiments of covers for smoking accessories. In a first embodiment, a covering device is provided designed to be snapped into place over the opening of the socket for a vehicle cigarette lighter. The covering device may have a design there... | 05/22/1990 |
| 4897945 | Lock box door protector A lock box door protector prevents doors to new or unoccupied homes from being scratched by realtor's lock boxes. The lock box door protector comprises a plastic sleeve or strip that fits over the doorknob and is positioned between the door and the lock b... | 02/06/1990 |
| 4862617 | Detachable message-carrying device A message-carrying device (e.g., a key ring holder) wherein the device is provided with a restricted passageway communicating between a central opening and an opening along the edge of the device for receiving a portion of an article to which the device i... | 09/05/1989 |
| 4545521 | Envelope with hanger An envelope comprising a body and a hanger. The body includes front and back panels forming a pocket therebetween and a seal flap. The hanger includes front and back panels which are extensions of the body panels, a doorknob opening and a door handle open... | 10/08/1985 |
| 4539936 | Animal door scratch preventer An elongated, heavy plastic strip substantially covering the stile of a door containing the door handle and extending in a vertical direction therefrom and removably secured to the door handle at one end and having elements to removably secure the plastic... | 09/10/1985 |
| 4460119 | Door hanging envelope An envelope which, for the purposes of delivery, may be hung over a door knob. The envelope comprises an envelope portion provided with a flap for closing that envelope portion, and a hanging portion from which the envelope portion is separable, the hangi... | 07/17/1984 |
| 4422852 | Teaching aid and process for teaching A teaching aid having an alongated backing including an open slot terminating into a central opening. One end of the aid has a picture of a face. Printed indicia is on the elongated backing. The process for teaching comprises pivoting the teaching aid aro... | 12/27/1983 |
| 4216598 | Releasably securable door knob tag A wind proof door knob tag especially for use with exterior doors includes integral flexible detent tabs between the opening through which the door knob passes and the opening which conforms to the outside diameter of door knob shaft. The tabs are cammed ... | 08/12/1980 |
| 4212260 | Automobile headlight reminder device An apparatus for reminding a driver to turn off automobile headlights before locking the automobile door, comprises a sheath member defining an enclosure for concealing an interior automobile door lock actuating post and removably mountable thereover. A c... | 07/15/1980 |
| 3977105 | Reservoir cap assembly of a vehicle master cylinder A reservoir cap assembly of a vehicle master cylinder includes a cap body detachably mounted on an open end of a reservoir a caution plate on which directions or the like are inscribed, and a rivet having head and leg portions for respectively securing th... | 08/31/1976 |