Alexander Wiegand GmbH & Co.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5170549 Process and arrangement for manufacturing a measurement device for measuring pressure or temperatureExpiredJul 23, 91Dec 15, 92[G01L]
4876894 Pressure guage connectionExpiredJun 16, 88Oct 31, 89[G01L]
4726217 Process for the production of a tube spring manometer measurement systemExpiredAug 22, 86Feb 23, 88[B23Q, G01L]
4646574 Pressure gauge housing made of synthetic materialExpiredApr 03, 85Mar 03, 87[G01L]
4217784 Tube spring manometerExpiredJan 24, 79Aug 19, 80[G01L]
4214474 Density monitoring apparatusExpiredOct 04, 78Jul 29, 80[G01N]
4211000 Device for producing a spring manometer measuring systemExpiredJan 24, 79Jul 08, 80[G01F]

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