US2509656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: TWENTICTH CENTURY VALVE CORP I
•
Filing: 1946-09-12
•
Granted: 1950-05-30
•
Expires: 1966-09-12
Abstract
No abstract record available.
Inventors
- 👤 Tomoser Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:51
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/243
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US549419A
Cited
US1320944A
Cited
GB293730A
Cited
GB439591A
Cited
US2132030A
Cited
US2087185A
Cited
US2217880A
Cited
US2394345A
Cited
US2344657A
Cited
US2415417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |