Assignee

JOHNSTON ROBERT D

US·1 granted patent·56 citations·filing 1986–1986

Technology mixB60Q1 G01S1 G08B1 G08G1

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0177US4747064AApproaching vehicle informing system and methodJOHNSTON ROBERT D·Filed 1986·Granted May 24, 1988·56 cites·16 claims

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