Patent US2667181A successfully refreshed from Google Patents.
US2667181A
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US
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Slide selector valve
Assignee: Electrol Inc
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Filing: 1947-12-03
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Granted: 1954-01-26
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Expires: 1967-12-03
Abstract
No abstract record available.
Inventors
- 👤 Benjamin N Ashton
- 👤 Eugene V Barkow
- 👤 John P Frain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US772115A
Cited
US1856996A
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US2036955A
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US2179179A
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US2366382A
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US2403519A
Cited
US2283541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-25 | 1957-07-27 | 1958-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-25 | 1961-07-27 | 1962-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-25 | 1965-07-27 | 1966-01-26 | $7700.00 | Window Closed / Lapsed |