Patent US2648376A successfully refreshed from Google Patents.
US2648376A
Expired / Lapsed
US
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Flare stack lighter
Assignee: Standard Oil Development Co
•
Filing: 1948-03-06
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Granted: 1953-08-11
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Expires: 1968-03-06
Abstract
No abstract record available.
Inventors
- 👤 Leo W Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:26
CPC Classifications
F; F23; F23G; F23G7/00; F23G7/06; F23G7/08; F23G7/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1566718A
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US791002A
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US935444A
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US1415123A
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US1827505A
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GB349509A
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US2118741A
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US2480230A
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US2537091A
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US2460016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |