US2703633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-way brake
Assignee: American Hoist and Derrick Co
•
Filing: 1948-12-27
•
Granted: 1955-03-08
•
Expires: 1968-12-27
Abstract
No abstract record available.
Inventors
- 👤 Donald C Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
F; F16; F16D; F16D59/00; B; B66; B66D; B66D5/00; B66D5/02; B66D5/12; B66D2700/00; B66D2700/07
Claims Analysis
Total Claims: 0
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US2461675A
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US2583140A
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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) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |