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Class Information
Number: 353/65
Name: Optics: image projectors > Episcope (i.e., opaque projector)
Description: Subject matter including means to project the image of an opaque object by reflecting light from the object rather than projecting light through a slide or film as in a transparency projector.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7307384 |
Circuit having a second ac/dc converter |
Dec. 11, 2007 |
| 6893132 |
Camera-assisted presentation system |
May. 17, 2005 |
| 6623127 |
System and method for enlarging a liquid crystal display screen of a personal data assistant |
Sep. 23, 2003 |
| 5642926 |
Projector of reflection type |
Jul. 1, 1997 |
| 5580143 |
Real image direct front projector |
Dec. 3, 1996 |
| 5497207 |
Overhead projector |
Mar. 5, 1996 |
| 5214458 |
Display apparatus |
May. 25, 1993 |
| 5033842 |
Episcopic projector |
Jul. 23, 1991 |
| 4988599 |
Electrophotographic color toner having selected index of refraction range |
Jan. 29, 1991 |
| 4952053 |
Transparency overhead projector |
Aug. 28, 1990 |
| 4690527 |
Device for reproduction and tracing |
Sep. 1, 1987 |
| 4652101 |
Overhead projector |
Mar. 24, 1987 |
| 4571041 |
Three dimensional projection arrangement |
Feb. 18, 1986 |
| 4548485 |
Reading device for the visually handicapped |
Oct. 22, 1985 |
| 4279482 |
Illumination of replicas of biological surface tissue |
Jul. 21, 1981 |
| 4264168 |
Projection device, especially for photography, motion pictures and television |
Apr. 28, 1981 |
| 4261657 |
Optical display device |
Apr. 14, 1981 |
| 4105313 |
Dual purpose photographic displays |
Aug. 8, 1978 |
| 3951535 |
Low profile episcopic projector |
Apr. 20, 1976 |
| 3947103 |
Low profile episcopic projector and opaque materials therefor |
Mar. 30, 1976 |
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