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US2657289A
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US
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Pressure switch
Assignee: Dayton Pump and Manufacturing Co
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Filing: 1951-02-20
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Granted: 1953-10-27
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Expires: 1971-02-20
Abstract
No abstract record available.
Inventors
- 👤 Wolfe H Hix
- 👤 Edward W Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:05
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2607; H01H35/2614; H01H35/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2040181A
Cited
US2393455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |