FR582275A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Disc of glass or other material intended for use as an optical mirror in telescopes and other optical instruments
Assignee: George-Willis Ritchey
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Filing: 1924-05-27
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Granted: 1924-12-15
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Expires: 1944-05-27
Abstract
No abstract record available.
Inventors
- 👤 George-Willis Ritchey
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08
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