Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6084724 | Glass coated cemented plastic doublets and method for making | Philip J. Wiegand, Alan E. Lewis | 2000-07-04 |
| 5991096 | Zoom lens | — | 1999-11-23 |
| 5875059 | Variable focal length lens system having a divergent front lens unit | — | 1999-02-23 |
| 5805348 | Lens system with reduced sensitivities and a method of manufacturing | Barbara J. Kouthoofd | 1998-09-08 |
| 5768030 | Compact small format lens system | Barbara J. Kouthoofd | 1998-06-16 |
| 5745307 | Cluster lens system such as for use in photographic printers | Barbara J. Kouthoofd | 1998-04-28 |
| 5717525 | Zoom lenses | Barbara J. Kouthoofd | 1998-02-10 |
| 5703721 | Optical magnifier | Joseph Bietry, Paul D. Ludington | 1997-12-30 |
| 5671092 | Reverse Galilean finder with projected front window | William B. Jones, John D. Griffith | 1997-09-23 |
| 5650878 | Compact lens system and a method for making such | — | 1997-07-22 |
| 5642231 | Compact 3X zoom lens | — | 1997-06-24 |
| 5602676 | Compact zoom lens with reduced aspheric decenter sensitivity | — | 1997-02-11 |
| 5589989 | Compact objective lens system | William T. Goosey, Jr. | 1996-12-31 |
| 5572369 | Triplet-type lens for use in a compact photographic camera | William T. Goosey, Jr. | 1996-11-05 |
| 5502597 | Wide-angle photographic lens system and a photographic camera | Joel S. Lawther | 1996-03-26 |
| 5500703 | Real image zoom viewfinder | William T. Goosey, Jr. | 1996-03-19 |
| 5486895 | Optical system for printing normal and panoramic images | Carl F. Leidig, William E. Moore | 1996-01-23 |
| 5473473 | Two element plastic zoom camera lens | Alan E. Lewis | 1995-12-05 |
| 5428415 | Slide projector for front and rear projection | Brian Keelan, Daniel M. Pagano | 1995-06-27 |
| 5381269 | Zoom lens | — | 1995-01-10 |
| 5270867 | Compact zoom lens having a weak front lens group | — | 1993-12-14 |
| 5270861 | Zoom lens system for use in a compact camera | — | 1993-12-14 |
| 5255123 | Microfilm reader/printer zoom lens system | — | 1993-10-19 |
| 5247324 | Real image zoom viewfinder | — | 1993-09-21 |
| 5132846 | Microfilm reader/printer zoom lens | — | 1992-07-21 |