US2631818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power control mechanism and winch for cable drawn scoops
Assignee: Jeffrey Manufacturing Co
•
Filing: 1949-10-25
•
Granted: 1953-03-17
•
Expires: 1969-10-25
Abstract
No abstract record available.
Inventors
- 👤 Paul V Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:26
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/60; B66D1/80; B66D1/28; B66D1/40; B66D1/42; B66D1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US563172A
Cited
US1664377A
Cited
US681941A
Cited
US1413094A
Cited
US1352045A
Cited
US1564781A
Cited
US1953783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |