US3033531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic winch
Assignee: WW Patterson Co
•
Filing: 1957-11-15
•
Granted: 1962-05-08
•
Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 Iii William W Patterson
- 👤 Eugene F Grapes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:36
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/08; B63; B63B; B63B21/00; B63B21/16; B63B21/56; B63B21/62; B66D5/00; B66D5/32; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0133; B66D2700/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |