US2906289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: KUNKLE VALVE Co
•
Filing: 1956-12-14
•
Granted: 1959-09-29
•
Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 Louis A Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:54
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/044; F22; F22B; F22B37/00; F22B37/02; F22B37/42; F22B37/44; F22B37/446; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7834; Y10T137/7837; Y10T137/7904; Y10T137/7922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US269534A
Cited
US2451586A
Cited
US1890248A
Cited
US2278437A
Cited
US2320339A
Cited
GB659079A
Cited
FR1091327A
Cited
US2771248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |