US2473527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for production of heattreating atmospheres
Assignee: Westinghouse Electric Corp
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Filing: 1945-10-12
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Granted: 1949-06-21
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Expires: 1965-10-12
Abstract
No abstract record available.
Inventors
- 👤 John G Hoop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:04
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74; C21D1/76; C21D1/763; B; B01; B01J; B01J19/00; B01J19/14; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/386; C01B2203/00; C01B2203/02; C01B2203/0205; C01B2203/0227; C01B2203/0238; C01B2203/08; C01B2203/0805; C01B2203/0811; C01B2203/085; C01B2203/0866; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/12; C01B2203/1276; C01B2203/16; C01B2203/1628; C01B2203/1633; C01B2203/169; C01B2203/1695
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |