Patent US2970259A successfully refreshed from Google Patents.
US2970259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame detector
Assignee: Phillips Petroleum Co
•
Filing: 1951-04-23
•
Granted: 1961-01-31
•
Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Ross S Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:29
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/12; F23N5/126; G; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US867877A
Cited
US824638A
Cited
US2033465A
Cited
US2343001A
Cited
US2272239A
Cited
US2317720A
Cited
US2316872A
Cited
US2374610A
Cited
US2523017A
Cited
US2671200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |