US2953347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat for fluid control valve
Assignee: Tillotson Manufacturing Co
•
Filing: 1954-04-19
•
Granted: 1960-09-20
•
Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:50
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; F16K1/425; F02; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4328; F02M2700/4333
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US461440A
Cited
US613024A
Cited
FR378947A
Cited
US1722037A
Cited
GB302834A
Cited
US1789964A
Cited
US2092946A
Cited
US2299073A
Cited
US2344657A
Cited
US2520092A
Cited
US2481460A
Cited
US2662348A
Cited
US2525799A
Cited
US2654560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |