Patent US2645170A successfully refreshed from Google Patents.
US2645170A
Expired / Lapsed
US
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Film guide structure for photographic cameras
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1950-06-17
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Granted: 1953-07-14
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Expires: 1970-06-17
Abstract
No abstract record available.
Inventors
- 👤 Heidecke Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:28
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42; G03B1/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270866A
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US1273328A
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US1404707A
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US1728670A
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US2147106A
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US2336279A
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US2457915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |