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Fr. Mettler's Sohne Maschinenfabrik
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Arth, CH
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Patent Grant
Piezoelectric transducer for producing a signal depending on the te...
Patent number
4,361,777
Issue date
Nov 30, 1982
Fr. Mettler's Sohne Maschinenfabrik
Hermann Mettler
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL