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Patent US2652728A successfully refreshed from Google Patents.
US2652728A
Expired / Lapsed
US
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Crankshaft, piston, and connecting rod for internal-combustion engines
Assignee: Individual
•
Filing: 1949-12-19
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Granted: 1953-09-22
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Expires: 1969-12-19
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Kiekhaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:57
CPC Classifications
F; F16; F16C; F16C9/00; F16C9/04; F02; F02B; F02B41/00; F02B61/00; F02B61/04; F02B61/045; F02B75/00; F02B75/16; F02B75/02; F02B2075/022; F02B2075/025; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208; Y10T74/21; Y10T74/2142; Y10T74/2162; Y10T74/2173
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB157961A
Cited
US1375142A
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US1408475A
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US1542209A
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US1696468A
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US1717066A
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USRE18089E
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US1838901A
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US2043014A
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US2065509A
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US2053534A
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US2259324A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |