Patent US4693303A successfully refreshed from Google Patents.
US3581371A
Expired / Lapsed
US
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Photographic film packet manufacture
Assignee: Polaroid Corp
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Filing: 1969-03-03
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Granted: 1971-06-01
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Expires: 1989-03-03
Abstract
Abstract IN PHOSOGRAPHIC FILM PACKET MANUFACTURING APPARATUS HAVING STATIONS OPERATING ON WEB PORTIONS, FIRST AND SECOND DETECTORS, DOWNSTREAM OF FIRST AND SECOND STATIONS, PROVIDING SIGNALS TO A MEMORY IN RESPONSE TO WEB PORTION CONDITIONS, AN ELEMENT RESPONDING TO SIGNALS FROM THE FIRST DETECTOR TO PREVENT OPERATION OF THE SECOND STATION, AND AN EJECTOR FOLLOWING THE SECOND DETECTOR AND RESPONSIVE TO SIGNALS FROM IT TO PREVENT WEB PORTIONS FROM REACHING A TERMINAL STATION.
Inventors
- 👤 Donald H Bushey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:28
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53026; Y10T29/5303; Y10T29/53039; Y10T29/53043; Y10T29/53048; Y10T29/53052; Y10T29/53465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |