US2431457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relief valve
Assignee: Standard Thomson Corp
•
Filing: 1943-03-13
•
Granted: 1947-11-25
•
Expires: 1963-03-13
Abstract
No abstract record available.
Inventors
- 👤 Carlton W Bondurant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/18; F16K17/19; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7773; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7882; Y10T137/7886; Y10T137/7897
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1995480A
Cited
US2313149A
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US1051554A
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US1930107A
Cited
US1981965A
Cited
US2266314A
Cited
US2290059A
Cited
US2283513A
Cited
US2366146A
Cited
US2345547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |