US2416031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump
Assignee: FMC Corp
•
Filing: 1942-01-31
•
Granted: 1947-02-18
•
Expires: 1962-01-31
Abstract
No abstract record available.
Inventors
- 👤 John B Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:16
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE436269C
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US1874324A
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US1714784A
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US1734507A
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GB331142A
Cited
US1981965A
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DE652740C
Cited
US2124681A
Cited
FR829826A
Cited
US2178994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |