US2693791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breather for air-cooled internalcombustion engines
Assignee: Briggs and Stratton Corp
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Filing: 1954-08-09
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Granted: 1954-11-09
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Leo J Lechtenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:32
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M2013/0438
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361061A
Cited
US1352022A
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US2029216A
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US2187265A
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US2305186A
Cited
US2607332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |