US1628375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for refining metals
Assignee: General Electric Co
•
Filing: 1925-12-31
•
Granted: 1927-05-10
•
Expires: 1945-12-31
Abstract
No abstract record available.
Inventors
- 👤 Unger Magnus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:16
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/16; H05B6/18; F; F27; F27B; F27B14/00; F27B14/02; F27B14/06; F27B14/061; F27B14/065; F27B2014/066
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) | 1930-05-09 | 1930-11-08 | 1931-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-09 | 1934-11-08 | 1935-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-09 | 1938-11-08 | 1939-05-10 | $7700.00 | Window Closed / Lapsed |