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Class Information
Number: 353/DIG.6
Name: Optics: image projectors > Head accessories
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6443577 |
Overhead projection having a friction secured adjustable cantilevered head |
Sep. 3, 2002 |
| 6170954 |
Overhead projector of the under mirror type |
Jan. 9, 2001 |
| 5741056 |
Projecting head mechanism of a projecting machine |
Apr. 21, 1998 |
| 5465127 |
Overhead projector with vibration control head |
Nov. 7, 1995 |
| 5281986 |
Latching mechanism for overhead projector post |
Jan. 25, 1994 |
| 5245370 |
Overhead projector focus arm adjustment mechanism |
Sep. 14, 1993 |
| 5172144 |
Image display control panel for overhead projectors |
Dec. 15, 1992 |
| 4867555 |
Retrofocus lens for overhead projector |
Sep. 19, 1989 |
| 4863263 |
Overhead projector |
Sep. 5, 1989 |
| 4795252 |
Overhead projector |
Jan. 3, 1989 |
| 4634246 |
Automatic focus for overhead projector |
Jan. 6, 1987 |
| 4353627 |
Over-head projector with partial projection device |
Oct. 12, 1982 |
| 4023893 |
Lamp and lens retrofit assembly for overhead projector |
May. 17, 1977 |
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