Patent US2472720A successfully refreshed from Google Patents.
US2472720A
Expired / Lapsed
US
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Method of burning oil
Assignee: Individual
•
Filing: 1944-12-19
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Granted: 1949-06-07
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Expires: 1964-12-19
Abstract
No abstract record available.
Inventors
- 👤 Nagel Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:48
CPC Classifications
F; F23; F23D; F23D11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1023422A
Cited
US1055715A
Cited
US1063352A
Cited
US1491158A
Cited
US1869897A
Cited
US2055331A
Cited
US2088299A
Cited
US2122688A
Cited
US2081710A
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US2156121A
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US2143259A
Cited
US2221519A
Cited
US2206553A
Cited
US2334617A
Cited
US2359049A
Cited
US2325444A
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 |