US2177011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic gear-shifting mechanism
Assignee: Niles Bement Pond Co
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Filing: 1937-12-23
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Granted: 1939-10-24
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Expires: 1957-12-23
Abstract
No abstract record available.
Inventors
- 👤 Alexander G Whitehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:16
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/02; F16H59/04; F16H59/045; F16H63/00; F16H63/02; F16H63/30; F16H63/3023; Y; Y10; Y10S; Y10S74/00; Y10S74/02; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19293; Y10T74/19298; Y10T74/19326
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) | 1942-10-23 | 1943-04-24 | 1943-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-23 | 1947-04-24 | 1947-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-23 | 1951-04-24 | 1951-10-24 | $7700.00 | Window Closed / Lapsed |