Patent US2671390A successfully refreshed from Google Patents.
US2671390A
Expired / Lapsed
US
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Camera shutter mechanism
Assignee: SAWYER S Inc
•
Filing: 1950-07-14
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Granted: 1954-03-09
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Expires: 1970-07-14
Abstract
No abstract record available.
Inventors
- 👤 Gordon N Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:45
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/08; G03B35/10; G03B9/00; G03B9/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR328530A
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US1117637A
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FR444698A
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US1077157A
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GB410306A
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US2068911A
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US2218248A
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US2267794A
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US2358061A
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US2364652A
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US2328677A
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US2418644A
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US2553015A
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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) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |