US2524012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power boosted master brake cylinder in which booster fluid is applied upon movement of the cylinder
Assignee: Douglas Aircraft Co Inc
•
Filing: 1946-12-06
•
Granted: 1950-09-26
•
Expires: 1966-12-06
Abstract
No abstract record available.
Inventors
- 👤 Harold F Groebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:20
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/142; Y; Y10; Y10S; Y10S60/00; Y10S60/907
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1472801A
Cited
US1604545A
Cited
US1903973A
Cited
US1997062A
Cited
US2205806A
Cited
US2328684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |