Patent US3437110A successfully refreshed from Google Patents.
US3437110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure relief valve
Assignee: CITATION Manufacturing CO Inc
•
Filing: 1965-08-16
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Granted: 1969-04-08
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Dewle W Birdwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:58
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/082; Y; Y10; Y10S; Y10S137/00; Y10S137/906; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1679907A
Cited
US2179003A
Cited
US2243711A
Cited
US2925984A
Cited
DE1083096B
Cited
US3216441A
Cited
DK93880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |