US2063401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for operating furnaces for melting and refining metals and the like
Assignee: ROSSMAN ENGINEERING Co
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Filing: 1933-05-24
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Granted: 1936-12-08
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Expires: 1953-05-24
Abstract
No abstract record available.
Inventors
- 👤 Allen M Rossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:04
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/04; F; F27; F27B; F27B3/00; F27B3/002; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-12-08 | 1940-06-08 | 1940-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-12-08 | 1944-06-08 | 1944-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-12-08 | 1948-06-08 | 1948-12-08 | $7700.00 | Window Closed / Lapsed |