There are examples of it in many industrial products, like the radio speaker below (the circle pattern in the top left corner):
1959 Portable Transistor Radio and Phonograph (model TP 1) (MOMA Collection) Dieter Rams
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Sign up to join this communityThere are examples of it in many industrial products, like the radio speaker below (the circle pattern in the top left corner):
1959 Portable Transistor Radio and Phonograph (model TP 1) (MOMA Collection) Dieter Rams
Speaker Grill