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RAILWAY OR LIKE TIME OR FARE TABLES PERPETUAL CALENDARS
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Industry
CPC
G09D
Parent Industries
G
PHYSICS
G09
Cryptography, education, displays
Current Industry
G09D
RAILWAY OR LIKE TIME OR FARE TABLES PERPETUAL CALENDARS
Sub Industries
G09D1/00
Railway or like time or fare tables Indicating or reading aids therefor
G09D3/00
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