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Improvements relating to the production of illuminated trade signs
Improvements relating to the production of illuminated trade signs
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机译:有关生产发光商标的改进
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摘要
306,255. Pearse, W. H. Jan. 19, 1928. Elements moving always in one plane. rotating.-At one end of a tube D, on any longitudinal side of which an advertisement is displayed, is located a rotating colour disc E. A lamp B is arranged behind the disc, and clockwork power mechanism A is provided.
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