Patent US5000422A successfully refreshed from Google Patents.
US2811166A
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Modulating control device for gasfueled heating systems
Assignee: Stewart Warner Corp
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Filing: 1951-04-14
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Granted: 1957-10-29
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Expires: 1971-04-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Collins
- 👤 Frank A Ryder
- 👤 Ross D Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:04
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/007; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/18; F23N2235/20; F23N2235/24; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1174003A
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US1363513A
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US2311061A
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US2393841A
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US2418163A
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US2641237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |