Introtek International, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5155472 Contact type liquid level sensing systemExpiredJul 14, 86Oct 13, 92[G08B]
4733560 Liquid sensing systemExpiredAug 13, 86Mar 29, 88[G01F]
4651555 Apparatus for detecting discontinuities in a fluid streamExpiredSep 11, 84Mar 24, 87[G01N]
4630245 Non-contacting liquid level detection systemExpiredJul 15, 83Dec 16, 86[G08B, G01F]

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