US2929273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed friction drive
Assignee: Individual
•
Filing: 1956-05-11
•
Granted: 1960-03-22
•
Expires: 1976-05-11
Abstract
No abstract record available.
Inventors
- 👤 Weber Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:01
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)
US1887505A
Cited
CH182150A
Cited
US2408666A
Cited
FR1002836A
Cited
GB713582A
Cited
US2759375A
Cited
FR1111217A
Cited
CH313221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |