Patent US2677023A successfully refreshed from Google Patents.
US2677023A
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Fluid flow responsive switch
Assignee: Individual
•
Filing: 1950-07-24
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Granted: 1954-04-27
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Expires: 1970-07-24
Abstract
No abstract record available.
Inventors
- 👤 Ii Leighton Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:14
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/0006; G01P13/0026; G01P13/0033; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US659855A
Cited
US968358A
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GB338602A
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US1836284A
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US2014042A
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DE717824C
Cited
US2312980A
Cited
US2347830A
Cited
US2421768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |