US2535969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater control system with time-delay switch
Assignee: Stewart Warner Corp
•
Filing: 1946-09-14
•
Granted: 1950-12-26
•
Expires: 1966-09-14
Abstract
No abstract record available.
Inventors
- 👤 Vernon N Tramontini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/206
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR811383A
Cited
US2149871A
Cited
US2201328A
Cited
US2217488A
Cited
US2272977A
Cited
US2329119A
Cited
US2355309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |