Assignee

ONO SHOICHI

JP·1 granted patent·7 citations·filing 1989–1989

Technology mixG01B1 G01V1 G08B1

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0134US4940889AMethod and apparatus for visual indication of optical alignment of photoelectric switchONO SHOICHI·Filed 1989·Granted Jul 10, 1990·7 cites·8 claims

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