US2821926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable volume reciprocating pump
Assignee: Cessna Aircraft Co
•
Filing: 1954-06-28
•
Granted: 1958-02-04
•
Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Wendell E Miller
- 👤 Jack F Gillmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:22
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/02; F04B19/00; F04B19/02; F04B19/022; F04B49/00; F04B49/22; F04B49/24; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/14; F16H2342/00; F16H2342/04; F16H2342/044
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |