Patent classifications
E
FIXED CONSTRUCTIONS
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E21
EARTH OR ROCK DRILLING; MINING
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E21C
MINING OR QUARRYING
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25/00
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
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E21C25/16
Machines slitting solely by one or more rotating saws, cutting discs, or wheels
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E21C25/18
Saws; Discs; Wheels
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