US PATENT SUBCLASS 369 / 172
.~.~.~.~ By replacement

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

99  DF  SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM {4}
127  DF  .~ Mechanical modification or sensing of storage medium {6}
170  DF  .~.~ Stylus holder or shield {1}
171  DF  .~.~.~ With structure to interchange styli {1}
172.~.~.~.~ By replacement

DEFINITION

Classification: 369/172

By replacement:

(under subclass 171) Subject matter wherein each one of the plurality of styli successively engage the storage medium.

(1) Note. These are generally single use type needles and are often in cartridge or magazine type containers.