US3605966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission control system
Assignee: Doosan Bobcat North America Inc
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Filing: 1970-05-25
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Granted: 1971-09-20
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Expires: 1990-05-25
Abstract
Abstract A MULTIPLE SPEED RATIO GEAR TRANSMISSION WITH A CONTROL SYSTEM FOR SELECTING DIFFERENT PAIRS OF CLUTCHED OF ENGAGEMENT AND ALTERNATING ENGAGEMENT OF THE PAIR OF CLUTCHES SELECTED FOR ENGAGEMENT.
Inventors
- 👤 William C Erdman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:32
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H61/0274; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87917; Y10T137/87925; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |