Patent US2872173A successfully refreshed from Google Patents.
US2872173A
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Method and apparatus for heat treating materials in a continuous operating furance
Assignee: Individual
•
Filing: 1954-03-15
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Granted: 1959-02-03
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Munker Theo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:57
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/40; C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1927; G05D23/1928; G05D23/27; F27B9/28; F27D; F27D19/00; F27D2019/0006; F27D2019/0025; F27D2019/0028; F27D2019/0031; F27D2019/0034; F27D2019/0037; F27D2019/0059
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2540966A
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US1775682A
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US1910549A
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US2089014A
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US2199082A
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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) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |