US2811320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential control
Assignee: Individual
•
Filing: 1953-03-16
•
Granted: 1957-10-29
•
Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Jean A Troendle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:13
CPC Classifications
B; B65; B65H; B65H18/00; B65H18/08; B65H18/10; B65H18/103; F; F16; F16H; F16H48/00; F16H48/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2059879A
Cited
US2034543A
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US2231279A
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US2412440A
Cited
US2566539A
Cited
US2571232A
Cited
US2638794A
Cited
US2551739A
Cited
US2638795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |