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FR1009251A
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FR
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Process of permanent modification of the color of precious stones
Assignee: Maurice-Elie Nahmias
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Filing: 1948-05-31
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Granted: 1952-05-27
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Expires: 1968-05-31
Abstract
No abstract record available.
Inventors
- 👤 Maurice-Elie Nahmias
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-22 22:27
CPC Classifications
G; G21; G21G; G21G1/00
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