Film viewer
Abstract
Abstract APPARATUS FOR HOLDING AND GUIDING FILM IN EITHER ROLL OR PLATE FORM FOR VIEWING OF EITHER TYPE OF FILM THROUGH A LENS, COMPRISING MEANS FOR SEQUENTIALLY GUIDING PORTIONS OF FILM IN ROLL FORM INTO A FIRST VIEWING POSITION OF THE LENS DISPOSED IN A FIRST PLANE, MEANS FOR DISPOSING FILM IN PLATE FORM IN A SECOND PLANE PARALLEL TO THE FIRST PLANE, THE SECOND PLANE CONTAINING A SECOND VIEWING POSITION OF THE LENS, MEANS FOR MOVING THE FILM IN PLATE FORM WITHIN THE SECOND PLANE TO POSITION A DESIRED PORTION THEREOF WITHIN THE SECOND VIEWING POSITION, AND MEANS MOUNTING THE LENS FOR MOVEMENT RELATIVE TO THE VIEWING POSITIONS FOR FOCUSING ON FILM IN EITHER VIEWING POSITION. A MICROFILM READER UTILIZING THE AFORESAID APPARATUS IS PROVIDED WHICH IS CAPABLE OF READING MICROFILM IN ROLL FORM OR IN PLATE FORM.
Inventors
- 👤 William Charles Kinsinger
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |