US2458803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined power and manually operated brake booster
Assignee: Individual
•
Filing: 1943-06-24
•
Granted: 1949-01-11
•
Expires: 1963-06-24
Abstract
No abstract record available.
Inventors
- 👤 Stelzer William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:12
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/242; B60T13/244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR614982A
Cited
US1673528A
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US1721213A
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US2006487A
Cited
US2098666A
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US2190238A
Cited
US2106758A
Cited
FR782865A
Cited
US2263263A
Cited
US2282472A
Cited
US2347349A
Cited
US2341318A
Cited
US2331238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |