FR995904A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Production of refractory metals
Assignee: Battelle Memorial Institute Inc
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Filing: 1949-09-21
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Granted: 1951-12-11
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Expires: 1969-09-21
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 01:30
CPC Classifications
C; C22; C22B; C22B34/00
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