US2804878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Governor for brake air compressor
Assignee: POWER BRAKE EQUIPMENT CO
•
Filing: 1954-06-29
•
Granted: 1957-09-03
•
Expires: 1974-06-29
Abstract
No abstract record available.
Inventors
- 👤 Rollin W Fishwood
- 👤 Walter J Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:04
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/022; F04B49/22; F04B49/24; F04B49/243; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/7722; Y10T137/7837; Y10T137/7876
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US122544A
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US1806925A
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US2731975A
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US1186247A
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GB207592A
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US1499834A
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US2023418A
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US2216855A
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US2252418A
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US2283311A
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US2275303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |