US2490503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic speed change transmission
Assignee: BARNES MOTOR DEVELOPMENTS Co
•
Filing: 1943-06-18
•
Granted: 1949-12-06
•
Expires: 1963-06-18
Abstract
No abstract record available.
Inventors
- 👤 William B Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:31
CPC Classifications
F; F16; F16D; F16D67/00; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H2708/00; F16H2708/02; F16H2708/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19158; Y10T74/19163; Y10T74/19219; Y10T74/19233; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433; Y10T74/19642; Y10T74/19647; Y10T74/19651; Y10T74/19656; Y10T74/19674
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |