Patent DE1125740B successfully refreshed from Google Patents.
Patent FR67037E successfully refreshed from Google Patents.
FR67037E
Expired / Lapsed
FR
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Improvements to large aperture optical systems with two reflecting spherical surfaces and their application to microscope objectives
Assignee: Optische Industrie de Oude Delft NV
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Filing: 1954-10-27
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Granted: 1957-11-04
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Expires: 1974-10-27
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
2026-11-08 06:05
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0856; G02B17/086; G02B17/0804; G02B17/0808; G02B21/00; G02B21/02; G02B21/04
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