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wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
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Industry
CPC
G09C3/04
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Parent Industries
G
PHYSICS
G09
Cryptography, education, displays
G09C
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
G09C3/00
Typewriters for ciphering or deciphering cryptographic text
Current Industry
G09C3/04
wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
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