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CASE COMMUNICATIONS INC
US3 patents
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US4646305AFeb 24, 1987
High speed data modem using multilevel encoding
CASE COMMUNICATIONS INC26 citations84
US4956851ASep 11, 1990
Modem with remote speed-change capability
CASE COMMUNICATIONS INC36 citations83
US4573175AFeb 25, 1986
Variable digital frequency generator with value storage
CASE COMMUNICATIONS INC10 citations70