Patent US2773437A successfully refreshed from Google Patents.
US2773437A
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US
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Supplementary operating knob for photographic cameras
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1952-06-18
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Granted: 1956-12-11
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Expires: 1972-06-18
Abstract
No abstract record available.
Inventors
- 👤 Knauf Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17231; Y10T279/17239; Y10T279/17256; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2084; Y10T74/20876
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1599034A
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US1869790A
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US2112722A
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US2357328A
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US2528002A
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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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |