US PATENT SUBCLASS 401 / 231
.~.~ Means regulating nib slit width or flexure

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}
231.~.~ Means regulating nib slit width or flexure