US2762618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Billet heating furnace
Assignee: Thermal Research and Engineering Corp
•
Filing: 1951-06-18
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Granted: 1956-09-11
•
Expires: 1971-06-18
Abstract
No abstract record available.
Inventors
- 👤 John A Johnson
- 👤 Robert H Eustis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:58
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2407; C; C21; C21D; C21D9/00; C21D9/0081; F27B9/30; F27B9/36; F27B2009/3653; F27B2009/3661; F27M; F27M2001/00; F27M2001/15; F27M2001/1539; F27M2001/1547; F27M2001/1552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB110937A
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US2056904A
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US2582462A
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US2544091A
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US2622863A
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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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |