Patent US2148636A successfully refreshed from Google Patents.
US2148636A
Expired / Lapsed
US
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Film feed mechanism for photographic roll film cameras
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1938-02-12
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Granted: 1939-02-28
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Expires: 1958-02-12
Abstract
No abstract record available.
Inventors
- 👤 Muller Walter
- 👤 Priesemann Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:34
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42
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) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |