Patent US2687650A successfully refreshed from Google Patents.
US2687650A
Expired / Lapsed
US
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Variable speed control device
Assignee: "ETABLISSEMENTS TERROT"
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Filing: 1951-04-23
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Granted: 1954-08-31
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Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Renaud Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:58
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/12; F16H9/14; F16H9/16; F16H2009/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191122714A
Cited
US2191531A
Cited
US2157757A
Cited
US2157758A
Cited
US2209484A
Cited
US2267238A
Cited
US2561545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |