US2982590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder construction
Assignee: Doosan Bobcat North America Inc
•
Filing: 1959-03-30
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Granted: 1961-05-02
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Expires: 1979-03-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Gunning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:45
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1438; F16; F16J; F16J10/00; F16J10/02; F16J12/00; Y; Y10; Y10S; Y10S92/00; Y10S92/01; Y10T; Y10T292/00; Y10T292/20; Y10T292/218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2518787A
Cited
US2480633A
Cited
US2662663A
Cited
US2719766A
Cited
US2849263A
Cited
US2890917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |