Patent US2671123A successfully refreshed from Google Patents.
US2671123A
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US
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Radiant heating furnace
Assignee: E H SARGENT AND CO
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Filing: 1952-09-03
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Granted: 1954-03-02
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Expires: 1972-09-03
Abstract
No abstract record available.
Inventors
- 👤 Paul H Sherrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:59
CPC Classifications
F; F27; F27B; F27B17/00; F27B17/02; G; G01; G01N; G01N31/00; G01N31/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318452A
Cited
GB190222A
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US1916296A
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US2031019A
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US2362687A
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US2386429A
Cited
US2593015A
Cited
US2610107A
Cited
US2636915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |