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Class Information
Number: 434/314
Name: Education and demonstration > Audio recording and visual means > Image projector
Description: Subject matter wherein the visual information is projected by optical means from an image carrier onto a viewing screen.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7441905 |
Optical scanner |
Oct. 28, 2008 |
| 7270420 |
Optical scanner |
Sep. 18, 2007 |
| 5541680 |
Slide projector assembly |
Jul. 30, 1996 |
| 5067287 |
Display wall assembly |
Nov. 26, 1991 |
| 4959734 |
Prestored response processing system for branching control of interactive video disc systems |
Sep. 25, 1990 |
| 4710130 |
Dichotic-diotic paired-association for learning of verbal materials |
Dec. 1, 1987 |
| 4470675 |
Random access control apparatus and method for slide projector |
Sep. 11, 1984 |
| 4468204 |
Process of human-machine interactive educational instruction using voice response verification |
Aug. 28, 1984 |
| 4165570 |
Pedestrian street and road crossing trainer and method |
Aug. 28, 1979 |
| 4092785 |
Teaching and display apparatus |
Jun. 6, 1978 |
| 4075668 |
Digital logic control for audio visual programs and method therefor |
Feb. 21, 1978 |
| 4046437 |
Combination cabinet for audio-visual teaching |
Sep. 6, 1977 |
| 4026040 |
Educational device for learning about inductors |
May. 31, 1977 |
| 4026039 |
Educational device for learning basic measurements |
May. 31, 1977 |
| 4009524 |
Educational device for learning fundamentals of engine operation |
Mar. 1, 1977 |
| 4006538 |
Educational device for learning switching |
Feb. 8, 1977 |
| 4006537 |
Educational device for learning rotary engine fundamentals |
Feb. 8, 1977 |
| 4004353 |
Educational device for learning automotive trouble-shooting |
Jan. 25, 1977 |
| 4003140 |
Educational device for learning engine fuel, lubrication and cooling systems |
Jan. 18, 1977 |
| 3999307 |
Teaching machine |
Dec. 28, 1976 |
| 3991488 |
Educational device for learning principles of standard transmission |
Nov. 16, 1976 |
| 3991489 |
Educational device for learning the fundamentals of an automotive carburetor system |
Nov. 16, 1976 |
| 3990158 |
Educational device for learning the fundamentals of automotive fuel system |
Nov. 9, 1976 |
| 3990157 |
Educational device for learning the fundamentals of a diesel engine and fuel injector system |
Nov. 9, 1976 |
| 3987557 |
Educational device for learning the fundamentals of an automotive drum brake system |
Oct. 26, 1976 |
| 3986278 |
Educational device for learning transmission drive shaft, and axle operation |
Oct. 19, 1976 |
| 3986277 |
Educational device for learning disc brake fundamentals |
Oct. 19, 1976 |
| 3986276 |
Educational device for learning suspension system fundamentals |
Oct. 19, 1976 |
| 3932948 |
Audio-visual learning system |
Jan. 20, 1976 |
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