US2780107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing drive
Assignee: COPAR Inc
•
Filing: 1954-04-09
•
Granted: 1957-02-05
•
Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Richard A Sorrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:12
CPC Classifications
F; F16; F16H; F16H3/00; F16H2712/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US725414A
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US783037A
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US968521A
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US1007957A
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US1091338A
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US1072165A
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US2046429A
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US2457821A
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US2535254A
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US2602341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |