US2625216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and ignition system for fuel burners
Assignee: Robertshaw Controls Co
•
Filing: 1948-12-30
•
Granted: 1953-01-13
•
Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles K Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:08
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/1407
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1636770A
Cited
US2506403A
Cited
US2250738A
Cited
US2233659A
Cited
US2275279A
Cited
US2408673A
Cited
US2512173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |