FR1003606A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Process for obtaining quartz crystals
Assignee: LE DIRECTEUR DU CT NAT D ETUDE
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Filing: 1947-01-31
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Granted: 1952-03-20
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Expires: 1967-01-31
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
2026-11-07 18:34
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/01; H10N30/09; H10N30/093
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