Patent US2615511A successfully refreshed from Google Patents.
US2615511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pressure controlled valve system for fluid fuel burners
Assignee: General Controls Co
•
Filing: 1946-12-07
•
Granted: 1952-10-28
•
Expires: 1966-12-07
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:50
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1715650A
Cited
US1820510A
Cited
US2273127A
Cited
US2213844A
Cited
US2305242A
Cited
US2297718A
Cited
US2318136A
Cited
US2318823A
Cited
US2403611A
Cited
US2306904A
Cited
US2353759A
Cited
US2372537A
Cited
US2383676A
Cited
US2395470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |