Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7339755 | Ring device with optical focusing mechanism A ring device is adapted for wearing on at least one finger of a user. The ring device includes a wearable main body portion and an optical member that is moveably affixed thereto. The optical member can be positioned in at least two positions: a viewing position, a... | 03/04/2008 |
| 7325744 | Memory card holder device An apparatus and system are disclosed for storing an electronic memory card. The apparatus, in one embodiment, is a memory card holder configured to removably retain a memory card within the cavity of a housing. The memory card holder may include a housing that rese... | 02/05/2008 |
| 7143607 | Jewelry article having interchangeable setting and capture module A jewelry article includes an interchangeable setting, a shank or body, and a capture module. The shank defines a mounting area that holds the setting on the shank except substantially along one axis when the setting is positioned in the mounting area. The capture m... | 12/05/2006 |
| 7121708 | Illuminated logo unit with light guide plate An illuminated logo unit (300) includes an image panel (301), and an underlying illuminating device (310) transmitting light beams to the image panel. The illuminating device includes an inner discoid light guide plate (312) fitted into a... | 10/17/2006 |
| 6948999 | Wand toy and process A “magic mirror” wand toy has a body having a mirror element that is partially transparent. An image illuminating apparatus is mounted rearward of the mirror element. An image transport apparatus has a plurality of images that can be positioned selectively and a... | 09/27/2005 |
| 6715223 | Promotional viewing device A promotional viewer includes a generally rectangular housing which can be engaged to an enclosure containing a recorded entertainment piece, or may be formed as an integral part thereof. The front surface of the viewer is provided with viewing apertures aligned ove... | 04/06/2004 |
| 5800034 | Toy film viewer and method of making same A manually operated toy film viewer of simple design for viewing an 8 millimeter film loop contained within the housing of the viewer. In operating the toy film viewer, the loop of 8 millimeter film is controllably moved past a viewing aperture by a manua... | 09/01/1998 |
| 5692818 | Film viewer A film viewer into which is loaded a cartridge which has a spool for taking up a film, a door provided at a film entrance/exit, and an engagement shaft for opening and closing the door, the film viewer being used to view a film which is wound on the spool... | 12/02/1997 |
| 5618093 | Thrust cartridge filmstrip viewer A filmstrip viewer is provided for viewing positive or negative images on filmstrips contained in so-called thrust film cartridges. The viewer has a film drive for advancing film from the thrust cartridge to a take-up spool for selectively advancing frame... | 04/08/1997 |
| 5521662 | Film viewer A film viewer for viewing a film which has been withdrawn from a cartridge. Its main body has a cartridge accommodating portion. In the film viewer, a rotating shaft connected to a spool of the cartridge and a winding shaft which winds the film are driven... | 05/28/1996 |
| 5407512 | Apparatus for mounting photographic prints and method of using same An apparatus for accurately, efficiently, and consistently aligning a tabbing strip with the edges of the photographic print to which it is to be applied. The apparatus comprises a support panel, a tabbing strip registration guide, a photographic print re... | 04/18/1995 |
| 4790756 | World globe geographic area viewer An educational toy for familiarizing young people or children with different geographic areas of the world. The educational toy comprises a rotatable world globe on which is mounted a carrier at least partially encircling the globe along a meridian thereo... | 12/13/1988 |
| 4591238 | Movie projector pendant A miniature movie projector for viewing a continuous loop movie film in ambient light is disclosed. A hand operated spring mechanism moves the continuous loop movie film such that ambient light entering the projector enables the movie to be viewed. The pr... | 05/27/1986 |
| 4491434 | Handheld viewer for transparency film A compact, handheld viewer adapted for use with photographic transparencies which are located within a film cassette in roll form, in a strip containing a plurality of individual scenes, or individually mounted transparencies. The viewer includes a manual... | 01/01/1985 |
| 4437248 | Viewer simulating television receiver A toy television receiver has a light-diffusing screen curved about a small light bulb, approximating a punctiform source of radiation, which transluminates a transparent carrier of positive images such as an endless film strip or a string of slides. The ... | 03/20/1984 |
| 4431282 | Device for mounting diapositives in a strip and an apparatus for projecting the strip-mounted diapositives Diapositives are mounted in a strip formed by a pair of flexible sheet members each having at least two picture openings therein in side-by-side relationship and the sheet members are fastened to each other in face-to-face relationship mutually offset by ... | 02/14/1984 |
| 4426000 | Slide holder for composite photographs and method of photographing slides A holder for securing in position a plurality of slides to enable a composite photograph thereof to be taken, for example for cataloguing a slide library. The holder comprises planar base and secondary frames to receive on their surfaces the slides to be ... | 01/17/1984 |
| 4416074 | Ring viewer A finger ring is provided with an endless strip of film held in a track formed within the ring. The ring includes a lens for viewing the film, a light transmitting system to apply light to the film and a film advance mechanism for moving the film a predet... | 11/22/1983 |
| 4396262 | Hand held transparency projector with simple advance mechanism A hand-held transparency projector includes a housing having a recess formed in the housing for carrying a film cartridge, and a projection aperture in one end of the housing through which the images on the film in the cartridge may be projected. The hous... | 08/02/1983 |
| 4390257 | Hand held viewer for various size films A compact film viewer for film strips of various sizes including a removable channel guide with a central opening disposed transverse a case between a light source and a lens and a film channel interchangeably received in the channel guide for slidably re... | 06/28/1983 |
| 4337044 | Night vision training simulator The present invention provides a training aid and method that produces restic colored images of targets, as seen through a thermal viewer, using black and white video or photographic techniques with filters and light modulators.... | 06/29/1982 |
| 4242818 | Collapsible photographic slide viewer A collapsible optical viewer is comprised of a front wall having a light-admitting opening therein; a rear wall assembly having a coincident viewing aperture therein; top and bottom walls contiguous with the front and rear walls; and, side walls, one of w... | 01/06/1981 |
| 4175344 | Viewer for the successive viewing of a number of transparent images A viewer for the successive viewing of a number of transparent images, comprising a casing with a viewing aperture provided with a lens and a counter-aperture aligned therewith which apertures are formed in two opposite faces of the casing, and further co... | 11/27/1979 |
| 4149776 | Portable microfiche reading instrument A relatively compact, inexpensive and portable viewer for reading photogric reductions, such as microfiche film cards, includes a cylindrical translucent diffuser tube which provides for entry of sufficient light under usual ambient conditions for viewin... | 04/17/1979 |
| 4073581 | Viewer for a strip of film A viewer for a strip of film includes a support that has a space adjacent one end thereof for a rolled-up strip of film and a space adjacent the other end thereof for that rolled-up strip of film, has resilient film guides adjacent those spaces to hold th... | 02/14/1978 |
| 4059351 | Hand-held film projectors A hand-held projector for projecting from a transparency on a film strip and image onto any desired surface. The film strip with a series of transparencies is guided in a casing which has a front peripheral wall portion carrying an objective behind which ... | 11/22/1977 |
| 4000572 | Mailing viewer for slides and the like The disclosed structure is a collapsible integral three-panel flat mailing slide viewer including a removable adapter for viewing film strips. The viewer may be formed for 2-D or 3-D slides.... | 01/04/1977 |
| 3950872 | Toy film viewer A toy film viewer is disclosed. The viewer comprises film wound on an endless spool and a crank driven set of gears which are capable of moving the film past the viewing portion of the viewer. The viewer further comprises a device which abruptly alters th... | 04/20/1976 |
