Patent US3441012A successfully refreshed from Google Patents.
US3441012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Individual
•
Filing: 1968-06-03
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Granted: 1969-04-29
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Expires: 1988-06-03
Abstract
No abstract record available.
Inventors
- 👤 Earl M Trammell Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:06
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/18; F02F1/183; F02F3/00; F16; F16C; F16C7/00; F16C7/02; F16C7/023; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US684745A
Cited
US1280058A
Cited
US1728514A
Cited
US1625654A
Cited
US1718070A
Cited
US2257417A
Cited
GB569020A
Cited
US2368412A
Cited
US2409555A
Cited
GB978679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |