Patent US2695668A successfully refreshed from Google Patents.
US2695668A
Expired / Lapsed
US
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Film feeding, frame counting, and perforating device
Assignee: International Business Machines Corp
•
Filing: 1950-04-21
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Granted: 1954-11-30
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Expires: 1970-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert I Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:36
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/0007; G; G03; G03D; G03D15/00; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4493; Y10T83/4539; Y10T83/4541; Y10T83/4544; Y10T83/4597; Y10T83/869; Y10T83/8765; Y10T83/8766
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1945218A
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US699611A
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US854706A
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US1421354A
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US1996665A
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US2091724A
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US2338596A
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US2379682A
Cited
US2610793A
Cited
US2519184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |