US PATENT SUBCLASS 73 / 320
.~.~.~ With spiral cam or guide

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

Internet Version by PATENTEC © 1999      Terms of Use


73 /   HD   MEASURING AND TESTING

290 R  DF  LIQUID LEVEL OR DEPTH GAUGE {13}
305  DF  .~ Float {12}
319  DF  .~.~ Vertically reciprocable {3}
320.~.~.~ With spiral cam or guide

DEFINITION

Classification: 73/320

(under subclass 319) Gauges wherein the motion of the indicator is derived from a reciprocally guided float coacting with a spiral or similar cam surface.