Patent US2020406A successfully refreshed from Google Patents.
US2020406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine crank shaft
Assignee: Ford Motor Co
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Filing: 1933-02-02
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Granted: 1935-11-12
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Expires: 1953-02-02
Abstract
No abstract record available.
Inventors
- 👤 Ford Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:17
CPC Classifications
F; F16; F16C; F16C3/00; F16C3/04; F16C3/06; F16C3/08; F16C2220/00; F16C2220/02; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2174; Y10T74/2183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-11 | 1939-05-13 | 1939-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-11 | 1943-05-13 | 1943-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-11 | 1947-05-13 | 1947-11-12 | $7700.00 | Window Closed / Lapsed |