Patent US2600309A successfully refreshed from Google Patents.
US2600309A
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US
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Flow-responsive electrical switch means
Assignee: Revere Corp of America
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Filing: 1950-02-14
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Granted: 1952-06-10
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Expires: 1970-02-14
Abstract
No abstract record available.
Inventors
- 👤 Dennison H Macdonald
- 👤 Edgar A Poe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:30
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28; G01P; G01P13/00; G01P13/0006; G01P13/0026; G01P13/0033; H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; H01H35/405; F; F16; F16L; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |