Patent US2908293A successfully refreshed from Google Patents.
US2908293A
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Rotary disk valve having a reinforced o-ring seal
Assignee: Delavan Manufacturing Co
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Filing: 1956-06-11
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Granted: 1959-10-13
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Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Johnson Alsin Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:33
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/04; F16K1/00; F16K1/32; F16K1/34; F16K1/46; F16K1/465; Y; Y10; Y10S; Y10S277/00; Y10S277/907; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/87249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1133853A
Cited
US2156967A
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US2290349A
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US2310583A
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US2633325A
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US2484102A
Cited
US2621888A
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US2717793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |