Patent US1687591A successfully refreshed from Google Patents.
US1687591A
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Gear-shifting mechanism
Assignee: RANDOL
•
Filing: 1924-10-30
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Granted: 1928-10-16
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Expires: 1944-10-30
Abstract
No abstract record available.
Inventors
- 👤 Glenn T Randol
- 👤 Robert S Plexico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:42
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/30; B; B60; B60W; B60W10/00; B60W10/02; B60W10/10; B60K; B60K2702/00; B60K2702/08; B60K2702/18; B60K2702/20; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242; Y10T74/19247; Y10T74/21; Y10T74/2142; Y10T74/2143
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) | 1931-10-16 | 1932-04-16 | 1932-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-16 | 1936-04-16 | 1936-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-16 | 1940-04-16 | 1940-10-16 | $7700.00 | Window Closed / Lapsed |