Patent US2682148A successfully refreshed from Google Patents.
US2682148A
Expired / Lapsed
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Apparatus for progressive injection of combustibles in peripheral type burners
Assignee: Individual
•
Filing: 1947-12-02
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Granted: 1954-06-29
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Expires: 1967-12-02
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Brierly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:27
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/34; F23C; F23C2900/00; F23C2900/07001; F23C2900/07002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2443841A
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US2555080A
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US2417445A
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US2540594A
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US2532709A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-28 | 1957-12-28 | 1958-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-28 | 1961-12-28 | 1962-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-28 | 1965-12-28 | 1966-06-29 | $7700.00 | Window Closed / Lapsed |