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G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
G01N3/40—Investigating hardness or rebound hardness
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FR819256A1960-02-231960-02-23Procédé et dispositif pour la mesure de la compressibilité des papiers, cartons et autres matières compressibles
ExpiredFR1249029A
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