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Apparatus or methods whereby a given sequence of signs
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Industry
CPC
G09C1/00
This industry / category may be too specific. Please go to a parent level for more data
Parent Industries
G
PHYSICS
G09
Cryptography, education, displays
G09C
CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
Current Industry
G09C1/00
Apparatus or methods whereby a given sequence of signs
Sub Industries
G09C1/02
by using a ciphering code in chart form
G09C1/04
with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text
G09C1/06
wherein elements corresponding to the sign making up the clear text are operatively connected with elements corresponding to the signs making up the ciphered text, the connections, during operation of the apparatus, being automatically and continuously permuted by a coding or key member
G09C1/08
the connections being mechanical
G09C1/10
the connections being electrical
G09C1/12
comprising contact-bearing permutation discs
G09C1/14
involving removable or interchangeable coding numbers
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