US2961229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal governor
Assignee: Caterpillar Inc
•
Filing: 1958-03-10
•
Granted: 1960-11-22
•
Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 John H Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:40
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/08; G05D13/10; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20672; Y10T74/20678
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924228A
Cited
US2204640A
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US2252838A
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US2307974A
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FR896406A
Cited
DE926101C
Cited
US2511095A
Cited
US2572096A
Cited
US2823820A
Cited
US2787918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |