US PATENT SUBCLASS 181 / 162
.~.~ Stylus bar


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



181 /   HD   ACOUSTICS

157  DF  DIAPHRAGM {10}
161  DF  .~ With direct mechanical connection to drive unit {1}
162.~.~ Stylus bar


DEFINITION

Classification: 181/162

(under subclass 161) Subject matter wherein the driver unit is a needle or holder furnished with an abrasive-resistant tip.

(1) Note. This is primarily a collection of old style phonograph pick-up heads which include a thin metallic diaphragm directly actuated by a stylus bar.

SEE OR SEARCH CLASS

369, Dynamic Information Storage or Retrieval,

157, 158, and 160+ for this subject matter forming a portion of a phonograph sound box.