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FR969797A
Expired / Lapsed
FR
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Catadioptric lens, high brightness, flat field, and focus outside the system
Assignee: Maurice-Joseph-Dulma Paul
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Filing: 1948-07-30
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Granted: 1950-12-26
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Expires: 1968-07-30
Abstract
No abstract record available.
Inventors
- 👤 Maurice-Joseph-Dulma Paul
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0884; G02B17/0804; G02B17/0808
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