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DE339895C
Expired / Lapsed
DE
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Arrangement to compensate for temperature influences on the true or apparent focal length of optical elements
Assignee: Societe dOptique et de Mecanique de Haute Precision
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Filing: 1919-05-01
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Granted: 1921-08-17
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Expires: 1939-05-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-01 23:50
CPC Classifications
G; G02; G02B; G02B13/00
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