US2990850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator mechanism
Assignee: Doosan Bobcat North America Inc
•
Filing: 1956-09-27
•
Granted: 1961-07-04
•
Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 Charles A Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/0021; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2788800A
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US1025341A
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US1157870A
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US1251962A
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US2064343A
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US2317745A
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US2434799A
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US2741263A
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US2649688A
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US2815921A
Cited
US2890715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |