US PATENT SUBCLASS 401 / 253
.~.~ Transversely grooved or slotted

Current as of: June, 1999
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401 /   HD   COATING IMPLEMENTS WITH MATERIAL SUPPLY

221  DF  BIFURCATE POINTED NIB TOOL (E.G., FOUNTAIN PEN) {3}
252  DD  .~ Attached coating material retainer feeding directly to tool {2}
253.~.~ Transversely grooved or slotted