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US3433206A
Expired / Lapsed
US
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Anti-clog device for air intake on air-cooled gas engines
Assignee: CLIFFORD C PENNINGTON
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Filing: 1967-08-04
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Granted: 1969-03-18
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Expires: 1987-08-04
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:51
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/12; F02; F02B; F02B63/00; F02B63/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US565464A
Cited
USRE23146E
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US1037659A
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US1860697A
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US2601907A
Cited
US2825318A
Cited
US3155083A
Cited
US3183899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |