Patent US2451349A successfully refreshed from Google Patents.
US2451349A
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Continuous heating furnace and method of operating the same
Assignee: AMSIER MORTON Corp
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Filing: 1943-01-12
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Granted: 1948-10-12
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Expires: 1963-01-12
Abstract
No abstract record available.
Inventors
- 👤 William A Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:56
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/3044; F27B9/36; F27B2009/3646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US158862A
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US316963A
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US576152A
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US1021144A
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US2135645A
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US2329211A
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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) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |