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US2459618A
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Heat-treating means utilizing controlled carbonaceous gaseous atmospheres
Assignee: Westinghouse Electric Corp
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Filing: 1947-07-05
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Granted: 1949-01-18
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Expires: 1967-07-05
Abstract
No abstract record available.
Inventors
- 👤 Harold E Cartier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:10
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; C23C8/22; C21; C21D; C21D1/00; C21D1/74; C21D1/76; C21D1/763
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1593890A
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US1711100A
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US1615481A
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US1734536A
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US2040729A
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US2191133A
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US2142139A
Cited
US2161162A
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US2275106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |