Patent US2280875A successfully refreshed from Google Patents.
US2280875A
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Fluid pressure generating or actuated means
Assignee: Individual
•
Filing: 1939-11-22
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Granted: 1942-04-28
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Expires: 1959-11-22
Abstract
No abstract record available.
Inventors
- 👤 Gunnar A Wahlmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:01
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/027; B23Q5/033; F; F01; F01B; F01B3/00; F01B3/0002; F01B3/0008; F01B3/0017; F01B3/0023; F01B3/10; F01B3/101; F01B3/102; F04; F04B; F04B1/00; F04B1/12; F04B1/14; F04B1/141; F04B1/145; F04B1/18; F04B1/26; F04B1/28; F04B1/29; F04B1/295; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/106; F04B49/00; F04B49/08; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-04-27 | 1945-10-27 | 1946-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-27 | 1949-10-27 | 1950-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-27 | 1953-10-27 | 1954-04-28 | $7700.00 | Window Closed / Lapsed |