Patent US4868585A successfully refreshed from Google Patents.
Patent US2960890A successfully refreshed from Google Patents.
US2960890A
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Variable torque transmissions
Assignee: Welex Inc
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Filing: 1956-07-10
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Granted: 1960-11-22
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Expires: 1976-07-10
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:43
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H2718/00; F16H2718/18; F16H2718/20; F16H2718/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1359896A
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US2212046A
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US2281384A
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US2445573A
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US2464494A
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US2517188A
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US2804748A
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US2787820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |