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Patent US2041333A successfully refreshed from Google Patents.
US2041333A
Expired / Lapsed
US
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Apparatus for producing carbonfree metals, alloys, and the like
Assignee: Vacuumschmelze GmbH and Co KG
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Filing: 1933-08-08
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Granted: 1936-05-19
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Expires: 1953-08-08
Abstract
No abstract record available.
Inventors
- 👤 Gruber Herbert
- 👤 Rohn Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:48
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/068
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) | 1939-05-19 | 1939-11-18 | 1940-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-19 | 1943-11-18 | 1944-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-19 | 1947-11-18 | 1948-05-19 | $7700.00 | Window Closed / Lapsed |