US PATENT SUBCLASS 401 / 257
.~.~ Pivotally related tool elements

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401 /   HD   COATING IMPLEMENTS WITH MATERIAL SUPPLY

221  DF  BIFURCATE POINTED NIB TOOL (E.G., FOUNTAIN PEN) {3}
256  DD  .~ Broad face, adjustable gap tool (e.g., ruling pen) {1}
257.~.~ Pivotally related tool elements