Simplicity and little space requirements are featured; equipment allows for demonstration of all types of electric sign advertising, whether correct or not; it is carried in trunks and is suitable for use in lectures. etc. (See also - no. 18 Sept. 3, 1931, pp. 271-272)
Portable demonstration equipment for electrical advertising
Transportable Demonstrationsgeraete fuer Lichtreklame
Licht und Lampe ; 20 , n 19
1931
3 pages
20 Figs.
Article (Journal)
German
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