Patent US3508813A successfully refreshed from Google Patents.
Patent US2719889A successfully refreshed from Google Patents.
US2719889A
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US
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Fluid flow responsive device
Assignee: Hays Manufacturing Co
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Filing: 1950-01-27
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Granted: 1955-10-04
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Expires: 1970-01-27
Abstract
No abstract record available.
Inventors
- 👤 Wesley G Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:39
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/0006; G01P13/0066; F; F15; F15B; F15B5/00; H; H01; H01H; H01H35/00; H01H35/24; H01H35/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US208427A
Cited
US362025A
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US1490654A
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DE490699C
Cited
FR784210A
Cited
US2102865A
Cited
US2088271A
Cited
US2096125A
Cited
US2339087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |