Patent US2597801A successfully refreshed from Google Patents.
US2597801A
Expired / Lapsed
US
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Suction hydroextractor
Assignee: Individual
•
Filing: 1946-04-04
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Granted: 1952-05-20
•
Expires: 1966-04-04
Abstract
No abstract record available.
Inventors
- 👤 Elliot Curtis Marcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:37
CPC Classifications
D; D06; D06B; D06B15/00; D06B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR387325A
Cited
US1498738A
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US1575346A
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US1570423A
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US2196449A
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US2119261A
Cited
US2198617A
Cited
GB498652A
Cited
US2304474A
Cited
US2509279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |