US2785697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Diamond Shamrock Corp
•
Filing: 1952-02-18
•
Granted: 1957-03-19
•
Expires: 1972-02-18
Abstract
No abstract record available.
Inventors
- 👤 Maurice C Sullender
- 👤 William C Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:01
CPC Classifications
F; F16; F16K; F16K49/00; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US275342A
Cited
US316967A
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US319765A
Cited
US327561A
Cited
US441141A
Cited
US502349A
Cited
US1668949A
Cited
GB624260A
Cited
US2518863A
Cited
US2564427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |