US2465383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of stainless steel in an arc electric furnace
Assignee: Chapman Valve Manufacturing Co
•
Filing: 1946-12-23
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Granted: 1949-03-29
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Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Vincent T Malcolm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:03
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1335009A
Cited
US1710446A
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US1844598A
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US1954555A
Cited
US1994679A
Cited
US2001016A
Cited
US2096318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |