US2981477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat valve
Assignee: Flexonics Corp
•
Filing: 1958-10-06
•
Granted: 1961-04-25
•
Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Clarence P Salmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:36
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1246355A
Cited
US1475313A
Cited
US1707891A
Cited
US2584877A
Cited
US2636776A
Cited
US2797873A
Cited
US2777638A
Cited
US2811313A
Cited
US2786633A
Cited
US2842318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |