Patent US2670686A successfully refreshed from Google Patents.
US2670686A
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US
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Submersible pump
Assignee: Dayton Pump and Manufacturing Co
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Filing: 1951-10-03
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Granted: 1954-03-02
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Expires: 1971-10-03
Abstract
No abstract record available.
Inventors
- 👤 Charles J Bergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:27
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1387660A
Cited
AT143179B
Cited
US2236887A
Cited
US2320708A
Cited
US2366964A
Cited
US2386377A
Cited
US2577559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |