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Patent US2912896A successfully refreshed from Google Patents.
US2912896A
Expired / Lapsed
US
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Time lapse attachment for movie cameras
Assignee: Pharmacia and Upjohn Co
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Filing: 1956-07-16
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Granted: 1959-11-17
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Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 Wade W Allen
- 👤 Norman A Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:19
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/58; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18288
Claims Analysis
Total Claims: 0
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US2552250A
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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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |