Patent US3202253A successfully refreshed from Google Patents.
US3202253A
Expired / Lapsed
US
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Clutch cooling means
Assignee: Doosan Bobcat North America Inc
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Filing: 1961-12-04
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Granted: 1965-08-24
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Howard V Merritt
- 👤 Ronald H Bolster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/853; F16D13/00; F16D13/58; F16D13/72; F16D25/00; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D25/0638; F16D25/12; F16D25/123; F16D55/00; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D2055/0004; F16D2055/0058; F16D69/00; F16D2069/004; F16D65/02; F16D65/12; F16D65/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE220151C
Cited
GB150301A
Cited
DE579061C
Cited
US2803764A
Cited
US2837192A
Cited
US2953040A
Cited
US3007555A
Cited
US3044736A
Cited
US3033319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |