US3606612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner and control
Assignee: Columbia Gas System Service Corp
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Filing: 1969-10-20
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Granted: 1971-09-20
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Expires: 1989-10-20
Abstract
Abstract A GAS BURNER HAVING TWO CONCENTRIC COMBUSTION SECTIONS WITH EACH COMBUSTION SECTION HAVING A SEPARATE GAS SUPPLY NOZZLE. A SINGLE GAS DISCHARGE CHAMBER FOR THE TWO SECTIONS IS LOCATED ABOVE THE BURNER AND IS CLOSED EXCEPT FOR A GAS DISCHARGE FLUE. HEAT IS TRANSMITTED BY INFRARED RADIATION THROUGH A GLASS PLATE TOP AND BY CONDUCTION FROM THE GLASS PLATE.
Inventors
- 👤 Edward A Reid Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:44
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145; F23D14/46; F23D14/60; F24; F24C; F24C3/00; F24C3/04; F24C3/047; F24C3/12; F24C3/126; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |