US2974752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive parking brake
Assignee: Motors Liquidation Co
•
Filing: 1957-09-03
•
Granted: 1961-03-14
•
Expires: 1977-09-03
Abstract
No abstract record available.
Inventors
- 👤 Harold L Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:23
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/005; F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/3416; F16H63/3458; F16H63/3475
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1185840A
Cited
US2148240A
Cited
US2254115A
Cited
US2387449A
Cited
US2689029A
Cited
US2724461A
Cited
US2860731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |