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AT139562B
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Device for photographic cameras for displaying the depth of field.
Assignee: Rudolf Ing Christof
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Filing: 1933-05-12
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Granted: 1934-11-26
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Expires: 1953-05-12
Abstract
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Inventors
- 👤 Rudolf Ing Christof
Bibliographic Details
Application Number
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Jurisdiction
AT
Data Source
google_patents
Last Synchronized
2026-10-30 12:17
CPC Classifications
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