US2455985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic brake booster
Assignee: EDWARD U DEMMER
•
Filing: 1945-05-14
•
Granted: 1948-12-14
•
Expires: 1965-05-14
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:44
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/242; B60T13/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |