Patent US3630607A successfully refreshed from Google Patents.
Patent US3025800A successfully refreshed from Google Patents.
US3025800A
Expired / Lapsed
US
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Submersible type pump
Assignee: DURO CO
•
Filing: 1957-06-03
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Granted: 1962-03-20
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Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 Wolfe H Hix
- 👤 Edward W Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:56
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/10; F05; F05B; F05B2240/00; F05B2240/50; F05B2240/52; Y; Y10; Y10S; Y10S415/00; Y10S415/901; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR391413A
Cited
GB191517283A
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US1267180A
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US2270666A
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US2366964A
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DE906894C
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US2657633A
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US2651271A
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US2667128A
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GB772654A
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US2816509A
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US2775945A
Cited
US2954739A
Cited
US2854926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |