US2675831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seatless valve
Assignee: Askania Regulator Co
•
Filing: 1950-12-26
•
Granted: 1954-04-20
•
Expires: 1970-12-26
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/061; F16K31/0613; F16K39/00; F16K39/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1926868A
Cited
US1785289A
Cited
US2087387A
Cited
US2379181A
Cited
US2411258A
Cited
US2529397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |