US2839129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety control unit for oil burners and the like
Assignee: CLAIRDON Inc
•
Filing: 1956-04-12
•
Granted: 1958-06-17
•
Expires: 1976-04-12
Abstract
No abstract record available.
Inventors
- 👤 Clair Donald St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:36
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N2227/00; F23N2227/06; F23N2227/22; F23N2227/24; F23N2233/00; F23N2233/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2685918A
Cited
US2274384A
Cited
US2388124A
Cited
US2440700A
Cited
US2748845A
Cited
US2751972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |