US2908137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power brake unit
Assignee: Motors Liquidation Co
•
Filing: 1957-02-12
•
Granted: 1959-10-13
•
Expires: 1977-02-12
Abstract
No abstract record available.
Inventors
- 👤 Charles W Spalding
- 👤 Walter H West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:02
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/142; B60T13/143; B60T13/144; B60T13/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960996A
Cited
US2170890A
Cited
US2343698A
Cited
US2359949A
Cited
US2409335A
Cited
US2661597A
Cited
US2775957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |