US3021729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary transmission for tractors or the like
Assignee: Caterpillar Inc
•
Filing: 1959-03-18
•
Granted: 1962-02-20
•
Expires: 1979-03-18
Abstract
No abstract record available.
Inventors
- 👤 Robert O Chambers
- 👤 Seth P Nordling
- 👤 Charles A Ramsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:51
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2170444A
Cited
US2505713A
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US2609706A
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US2597357A
Cited
US2793533A
Cited
US2673475A
Cited
US2717524A
Cited
US2926543A
Cited
US2890603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |