US PATENT SUBCLASS 401 / 235
.~.~.~ By pressure of tool on work surface

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}
222  DF  .~ Including reservoir and feeder {14}
232  DD  .~.~ With flow-regulator {4}
235.~.~.~ By pressure of tool on work surface