Patent DE657536C successfully refreshed from Google Patents.
DE657536C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Optical-electrical device for the blind to convert characters into Braille
Assignee: GEORG SCHUTKOWSKI
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Filing: 1935-06-21
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Granted: 1938-03-07
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Expires: 1955-06-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-30 19:49
CPC Classifications
G; G09; G09B; G09B21/00; G09B21/001; G09B21/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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