US2577913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable-speed drive and clutch
Assignee: Individual
•
Filing: 1949-05-13
•
Granted: 1951-12-11
•
Expires: 1969-05-13
Abstract
No abstract record available.
Inventors
- 👤 Alf A Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:14
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/12; F16H9/16; F16H63/00; F16H63/02; F16H63/04; F16H63/06; F16H63/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH72542A
Cited
US1792215A
Cited
US1963807A
Cited
GB368050A
Cited
US2076926A
Cited
US2109247A
Cited
US2347479A
Cited
US2532762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |