Patent US3483852A successfully refreshed from Google Patents.
US3483852A
Expired / Lapsed
US
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Fluid coupling fan drive
Assignee: Caterpillar Inc
•
Filing: 1967-12-01
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Granted: 1969-12-16
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Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Harry B Newman
- 👤 George W Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:57
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/004; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P7/042; F04D25/00; F04D25/02; F04D25/022; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2096070A
Cited
US2808817A
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US2855909A
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US2802459A
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US3033334A
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US3159254A
Cited
US3144922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |