US2494778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutdown system for oil burners
Assignee: RAY OIL BURNER Co
•
Filing: 1946-01-28
•
Granted: 1950-01-17
•
Expires: 1966-01-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Plass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:06
CPC Classifications
F; F23; F23N; F23N1/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1431054A
Cited
US1731806A
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US1858302A
Cited
AU1423428A
Cited
US1782668A
Cited
US1899396A
Cited
US2037994A
Cited
US2210852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |