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US2472398A
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US
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Arrangement for operating oil
Assignee: —
•
Filing: —
•
Granted: 1949-06-07
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Expires: 1966-06-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:22
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2012322A
Cited
US1985986A
Cited
US1986032A
Cited
US2077402A
Cited
US2231212A
Cited
US2174275A
Cited
US2425589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |