US3442290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: TYDEMAN MACHINE WORKS Inc
•
Filing: 1967-10-20
•
Granted: 1969-05-06
•
Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Edward H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:32
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F16; F16K; F16K17/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/87169; Y10T137/87177; Y10T137/87185; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191020090A
Cited
US2505757A
Cited
US2636510A
Cited
US2851054A
Cited
US3068898A
Cited
DE1164776B
Cited
US3133557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |