Patent US2623472A successfully refreshed from Google Patents.
US2623472A
Expired / Lapsed
US
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Reversible pump
Assignee: Individual
•
Filing: 1947-07-07
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Granted: 1952-12-30
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Expires: 1967-07-07
Abstract
No abstract record available.
Inventors
- 👤 Raymond Henri Edgard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:48
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/10; F04B1/113; F04B1/1133; B; B60; B60C; B60C23/00; B60C23/10; B60C23/12; B60C23/137; F04B1/0404; F04B1/0426; F04B1/1136; F04B9/00; F04B9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193283A
Cited
GB190109628A
Cited
US1023685A
Cited
US1370290A
Cited
US1466230A
Cited
US1641509A
Cited
US2208568A
Cited
US2336996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |