US PATENT SUBCLASS 400 / 138.6
.~.~.~.~ For type-die including piercing or cutting elements

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

135  DF  TYPING TO PRODUCE PIERCED CHARACTER {2}
137  DF  .~ Check-protection character {1}
138  DF  .~.~ By type-die mounted on carrier movable for selection of character {2}
138.2  DF  .~.~.~ On rotatable carrier (e.g., for scarifying elements, etc.) {3}
138.6.~.~.~.~ For type-die including piercing or cutting elements

DEFINITION

Classification: 400/138.6

For type-die including piercing or cutting elements:

(under subclass 138.2) Subject matter wherein the type-die* elements include slender elements, each having a sharp point at one end, or include elements, each having a sharp edge, which sharp point or edges penetrate through both opposite surfaces of the record-medium* as the type-die impacts the record-medium.