US2747558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-cooled engine and air intake therefor
Assignee: Individual
•
Filing: 1952-10-18
•
Granted: 1956-05-29
•
Expires: 1972-10-18
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Kiekhaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
F; F01; F01P; F01P1/00; F01P1/02; B; B27; B27B; B27B17/00; F02; F02B; F02B63/00; F02B63/02; F02M; F02M35/00; F02M35/02; F02M35/04; F02M35/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1617565A
Cited
US1562375A
Cited
GB267689A
Cited
US1995935A
Cited
US2076653A
Cited
US2168726A
Cited
US2370556A
Cited
US2487322A
Cited
US2595175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |