US2552765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shift control mechanism for change-speed gearing
Assignee: Doosan Bobcat North America Inc
•
Filing: 1949-05-28
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Granted: 1951-05-15
•
Expires: 1969-05-28
Abstract
No abstract record available.
Inventors
- 👤 Leo A Bixby
- 👤 Donald S Dence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:06
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/24; F16H59/00; F16H59/02; F16H59/04; F16H59/042; F16H63/00; F16H63/02; F16H63/08; F16H63/20; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19167; Y10T74/19219; Y10T74/19293; Y10T74/19298; Y10T74/19307; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/2014; Y10T74/20159
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1513374A
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US1887943A
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FR799949A
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US2220197A
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GB558392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |