Patent US2518937A successfully refreshed from Google Patents.
US2518937A
Expired / Lapsed
US
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Head structure for gun type oil burners
Assignee: PREMIX COMB Inc
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Filing: 1946-06-22
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Granted: 1950-08-15
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Expires: 1966-06-22
Abstract
No abstract record available.
Inventors
- 👤 Roberts William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:01
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/40; F23D11/408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1953483A
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US1990088A
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US2067446A
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US2120626A
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US2065042A
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US2219696A
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US2221519A
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US2240161A
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US2222031A
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US2361871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |