72275051
Jun 29, 1967
Oct 28, 1969
MECHANICAL SEALS AND PACKINGS-NAMELY, GRAPHITE PACKINGS, METAL RING PACKINGS, COPPER RING PACKINGS, CARBON RINGS AND COMBINATIONS THEREOF; SPRING SEALS, LOCOMOTIVE SEALS, CARBON SEALS WITH SPRING HOSE AND/OR CORRUGATED SPRINGS, LABYRINTH SEALS, CARBOPLANE SEALS AND TISSUE COLLAR SEALS, FOR USE IN MOVING MACHINE ELEMENTS
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