US2549896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple forward and reverse speeds transmission
Assignee: Doosan Bobcat North America Inc
•
Filing: 1947-07-21
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Granted: 1951-04-24
•
Expires: 1967-07-21
Abstract
No abstract record available.
Inventors
- 👤 Elmer J Dunham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:51
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H2714/00; F16H2714/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19228; Y10T74/19377; Y10T74/19386; Y10T74/19405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1136279A
Cited
GB190926574A
Cited
US1011555A
Cited
US1102378A
Cited
US1817660A
Cited
US2333037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |