Patent US2939346A successfully refreshed from Google Patents.
US2939346A
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US
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Two-step gear reduction mechanism
Assignee: Caterpillar Inc
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Filing: 1957-11-01
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Granted: 1960-06-07
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Expires: 1977-11-01
Abstract
No abstract record available.
Inventors
- 👤 John H Mccarthy
- 👤 Karl J Mogk
- 👤 Rollin P Van Zandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:58
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/2809; F16H1/2845; B; B62; B62D; B62D55/00; B62D55/08; B62D55/12; B62D55/125; F16H37/00; F16H37/02; F16H37/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB109437A
Cited
GB412540A
Cited
US2289285A
Cited
US2646297A
Cited
GB660497A
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GB714232A
Cited
US2759376A
Cited
US2802377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |