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Patent US2941475A successfully refreshed from Google Patents.
US2941475A
Expired / Lapsed
US
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Hydraulic pump
Assignee: DYNEX Inc
•
Filing: 1957-05-24
•
Granted: 1960-06-21
•
Expires: 1977-05-24
Abstract
No abstract record available.
Inventors
- 👤 David T Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:53
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/14; F04B1/122; F04B1/124; F04B1/18
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |