US2628677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety control and ignition apparatus for gaseous fuel burners
Assignee: Robertshaw Controls Co
•
Filing: 1947-12-06
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Granted: 1953-02-17
•
Expires: 1967-12-06
Abstract
No abstract record available.
Inventors
- 👤 Charles K Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:22
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2483191A
Cited
US2063834A
Cited
US2049958A
Cited
US2049959A
Cited
US2318823A
Cited
US2476386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |