Patent
1978-09-25
1979-09-25
Gellner, Michael L.
B41B 1310
Patent
active
041688899
ABSTRACT:
A type carrier for use in phototypesetting, comprising an opaque planar disc having at least two concentric circular rows of transparencies that define alpha-numeric characters, characterized in that the alpha-numeric characters in one of said circular rows are inverted duplicates of the alpha-numeric characters in the other of said rows.
REFERENCES:
patent: 2742830 (1956-04-01), Wirtz
patent: 3946294 (1976-03-01), Scholten
Columbian Art Works, Inc.
Gellner Michael L.
Jones Ira Milton
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