Patent DE520989C successfully refreshed from Google Patents.
DE520989C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Cinema playback machine
Assignee: Zeiss Ikon AG
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Filing: 1930-01-16
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Granted: 1931-03-14
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Expires: 1950-01-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-27 22:05
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/42; G03B1/48; G03B1/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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