US3038692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-temperature dual-seat gate valve
Assignee: RTX Corp
•
Filing: 1960-04-27
•
Granted: 1962-06-12
•
Expires: 1980-04-27
Abstract
No abstract record available.
Inventors
- 👤 Trent H Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:45
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/122; F16K3/00; F16K3/02; F16K3/12; F16K3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US476668A
Cited
US600181A
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US616886A
Cited
US1023955A
Cited
US1705481A
Cited
US1999155A
Cited
FR735816A
Cited
US2602298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |