Patent US2673734A successfully refreshed from Google Patents.
US2673734A
Expired / Lapsed
US
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Film winding device
Assignee: Individual
•
Filing: 1951-04-17
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Granted: 1954-03-30
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Expires: 1971-04-17
Abstract
No abstract record available.
Inventors
- 👤 Reza-Bek Sonia
- 👤 Korganian David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:53
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119489A
Cited
US1134664A
Cited
US1411106A
Cited
US2269653A
Cited
US2335179A
Cited
US2481708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |