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involving removable or interchangeable coding members
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Industry
CPC
G09C3/10
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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
G09C3/10
involving removable or interchangeable coding members
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