Assignee

WITZMAN MATTHEW R

US·1 granted patent·12 citations·filing 2009–2009

Technology mixB29D1 B41M1 B42D1 G02B1

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0189US8498033B2Optical device exhibiting color shift upon rotationWITZMAN MATTHEW R·Filed 2009·Granted Jul 30, 2013·12 cites·30 claims

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