US PATENT SUBCLASS 369 / 148
.~.~.~.~ Variable reluctance

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}
135  DF  .~.~ Specified structure of electrical transducing assembly {11}
146  DF  .~.~.~ Magnetic field variation (e.g., magnetostrictive) {2}
148.~.~.~.~ Variable reluctance {1}
149  DF  .~.~.~.~.~> Fixed coil surrounding fixed part of magnetic path

DEFINITION

Classification: 369/148

Variable reluctance:

(under subclass 146) Subject matter wherein the magnetic field variation is caused by a stylus-linked portion of the magnetic field circuit.