US2952723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the atmosphere in an electric furnace
Assignee: Republic Steel Corp
•
Filing: 1957-07-10
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Granted: 1960-09-13
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Expires: 1977-07-10
Abstract
No abstract record available.
Inventors
- 👤 Robert J Garmy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/10; C22B34/14; C21; C21C; C21C5/00; C21C5/52; C22B34/12; C22B34/1295; C22B9/00; C22B9/16; Y; Y02; Y02P; Y02P10/00; Y02P10/20
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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |