Patent US2142679A successfully refreshed from Google Patents.
Patent FR85460E successfully refreshed from Google Patents.
FR85460E
Expired / Lapsed
FR
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Projection lens with progressively variable focal length
Assignee: Meopta np
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Filing: 1964-03-09
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Granted: 1965-08-20
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Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 11:25
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/143; G02B15/1435; G02B15/143507
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