Patent US2716948A successfully refreshed from Google Patents.
US2716948A
Expired / Lapsed
US
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Rotary pump
Assignee: Individual
•
Filing: 1953-08-21
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Granted: 1955-09-06
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Expires: 1973-08-21
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Cuny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:02
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0421; F04B1/0426; F04B1/10; F04B1/113; F04B1/1133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1633720A
Cited
US1736497A
Cited
US2079119A
Cited
US2427224A
Cited
US2430362A
Cited
US2462725A
Cited
US2515033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |