US2614622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric ignition and automatic pilot for gaseous fuel burners
Assignee: Robertshaw Controls Co
•
Filing: 1948-05-04
•
Granted: 1952-10-21
•
Expires: 1968-05-04
Abstract
No abstract record available.
Inventors
- 👤 Eskin Samuel George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:36
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/105; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2237577A
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US2263767A
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US2031415A
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US2290048A
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US2333261A
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US2446718A
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US2454848A
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US2391753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |