FR692916A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Photoelectric microscope for studying the reflective powers of opaque and transparent minerals as well as metals and alloys
Assignee: SOC D CONST D APP DE LABORATOI
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Filing: 1929-06-27
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Granted: 1930-11-13
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Expires: 1949-06-27
Abstract
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 19:55
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0096
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