Patent US1371767A successfully refreshed from Google Patents.
Patent US2753147A successfully refreshed from Google Patents.
US2753147A
Expired / Lapsed
US
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Valve for exhaust braking
Assignee: Individual
•
Filing: 1953-05-14
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Granted: 1956-07-03
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Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Welge Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:58
CPC Classifications
F; F02; F02D; F02D9/00; F02D9/04; F02D9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1483657A
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US1620100A
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US1588569A
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US1577466A
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US1940712A
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US2035166A
Cited
US2168232A
Cited
FR904318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-03 | 1960-01-02 | 1960-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-03 | 1964-01-02 | 1964-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-03 | 1968-01-02 | 1968-07-03 | $7700.00 | Window Closed / Lapsed |