Photographic film unit
Abstract
Abstract A PHOTOGRAPHIC FILM UNIT OF THE SELF-DEVELOPING TYPE INCLUDING A PAIR OF SUPERPOSED SHEETS HAVING GENERALLY RECTANGULAR SECTIONS PROVIDED WITH TABS AT ONE END THEREOF. A SEPARABLE SEAL EXTENDS ACROSS THE SHEETS INWARDLY OF THE TABS AND THEY ARE RELEASABLY CONECTED TOGETHER ALONG THEIR JUXTAPOSED EDGES EXTENDING ON THE OPPOSITE SIDE OF THE SEAL FROM THE TABS. THE FILM UNIT FURTHER INCLUDES AN IMAGE-RECEIVING SHEET, A RUPTURABLE CONTAINER OF PROCESSING FLUID, A MASK AND RAILS, POSITIONED INSIDE THE ENVELOPE FORMED BY THE ATTACHED SUPERPOSED SHEETS, AND A PHOTOSENSITIVE SHEET ADAPTED TO BE SELECTIVELY INSERTED INTO AND REMOVED FROM THE ENVELOPE THROUGH ITS OPENED END. TAPES CONNECTING SUPERPOSED SHEETS, ADJACENT THE OPENING PROVIDED BETWEEN SAME SERVES TO RETAIN THEM IN HINGED RELATIONSHIP WHEN THE AFORESAID SEAL AND COMECTIONS ARE BROKEN. THE MASK IS FIRMLY ATTACHED TO ONE OF THE SUPERPOSED SHEETS AND OVERLAPS A PORTION OF THE IMAGE-RECEIVING SHEET.
Inventors
- 👤 Warren E Norquist
- 👤 Eugene F Marckini
- 👤 Paul J Vitali
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |