US1712938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Change-speed mechanism
Assignee: General Motors Research Corp
•
Filing: 1926-04-16
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Granted: 1929-05-14
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Expires: 1946-04-16
Abstract
No abstract record available.
Inventors
- 👤 Charles R Short
- 👤 Hughes Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:08
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/08; F16H63/20; F16H63/30; F16H63/32; F16H2063/3079; F16H2063/327; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/2014; Y10T74/20159; Y10T74/20165; Y10T74/21; Y10T74/2186
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) | 1932-05-13 | 1932-11-12 | 1933-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-05-13 | 1936-11-12 | 1937-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-05-13 | 1940-11-12 | 1941-05-14 | $7700.00 | Window Closed / Lapsed |