US2570862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pump with direction responsive impeller blades
Assignee: General Electric Co
•
Filing: 1949-10-29
•
Granted: 1951-10-09
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Frank A Rosenkrans
- 👤 Ernest A Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:49
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2261; F04D29/2283; F04D29/2238; F04D29/2244; F04D29/24; F04D29/247
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1518916A
Cited
US2149267A
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FR843192A
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US2430552A
Cited
US2370600A
Cited
US2382839A
Cited
US2442783A
Cited
US2432271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |