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G09B
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EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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G09C
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CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
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G09D
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RAILWAY OR LIKE TIME OR FARE TABLES; PERPETUAL CALENDARS
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G09F
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DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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G09G
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ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F 3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F 9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H05B 33/12, H10H; scanning, transmission or reproduction of documents or the like, e g facsimile transmission, details thereof H04N 1/00)[3,4,5]
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