US3304989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel feed control system responsive to flame color
Assignee: American Radiator and Standard Sanitary Corp
•
Filing: 1964-11-19
•
Granted: 1967-02-21
•
Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Alexander
- 👤 Melvin J Zucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:10
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N5/085; F23N5/20; F23N2227/00; F23N2227/36; F23N2229/00; F23N2229/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2673603A
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US2695661A
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US2695054A
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US2911540A
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US2958811A
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US2966619A
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US3088516A
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US3049169A
Cited
US3080708A
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US3143161A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |