Patent US2879081A successfully refreshed from Google Patents.
US2879081A
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US
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Breakaway valve
Assignee: KEEHN O Manufacturing Co
•
Filing: 1955-07-18
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Granted: 1959-03-24
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Expires: 1975-07-18
Abstract
No abstract record available.
Inventors
- 👤 Warner L Keehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:15
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/40; B; B60; B60D; B60D1/00; B60D1/58; B60D1/62; F16L37/24; F16L37/256; F16L55/00; F16L55/10; F16L55/1007; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2084842A
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US2199143A
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US2335825A
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US2330413A
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US2742975A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |