Patent US2680388A successfully refreshed from Google Patents.
US2680388A
Expired / Lapsed
US
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Variable speed power transmission
Assignee: Individual
•
Filing: 1951-04-30
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Granted: 1954-06-08
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Expires: 1971-04-30
Abstract
No abstract record available.
Inventors
- 👤 Lazarowicz Gustaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:28
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/48; F16H15/50; F16H15/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US464895A
Cited
US1370080A
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US1611459A
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US1867843A
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US1887505A
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DE603224C
Cited
US2109695A
Cited
US2275243A
Cited
US2315067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |