US2921530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary positive displacement pump
Assignee: Bendix Aviation Corp
•
Filing: 1956-12-14
•
Granted: 1960-01-19
•
Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 Aumick Kenneth Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:43
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737942A
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US2182072A
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US2216053A
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US2268807A
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US2335284A
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US2696787A
Cited
US2667125A
Cited
US2677330A
Cited
US2625108A
Cited
US2791966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |