US2845260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutral heating with controlled preheat
Assignee: Metallurgical Processes Co
•
Filing: 1954-04-09
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Granted: 1958-07-29
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Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Frank A Rusciano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/14; F27B9/147; C; C21; C21D; C21D1/00; C21D1/74; F27B9/04; F27B9/045; F27B9/20; F27B9/22; F27B9/227; F27B9/30; F27B9/3005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE167413C
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US1332684A
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US1406424A
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US2078747A
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US2160610A
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US2233474A
Cited
US2499704A
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US2499624A
Cited
US2620174A
Cited
FR987233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |