US2173044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary transmission mechanism for four-wheel-drive automotive vehicles
Assignee: ALMA MOTOR Co
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Filing: 1935-02-23
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Granted: 1939-09-12
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Expires: 1955-02-23
Abstract
No abstract record available.
Inventors
- 👤 Frank W Ruggles
- 👤 Charles D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:51
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/34; B60K17/344; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242; Y10T74/19293; Y10T74/19298; Y10T74/19307
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) | 1942-09-11 | 1943-03-13 | 1943-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-11 | 1947-03-13 | 1947-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-11 | 1951-03-13 | 1951-09-12 | $7700.00 | Window Closed / Lapsed |