US PATENT SUBCLASS 73 / 184
.~.~ Drag type

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

178 R  DF  NAVIGATION {5}
181  DF  .~ Ship's log {4}
184.~.~ Drag type {1}
185  DF  .~.~.~> Rotary

DEFINITION

Classification: 73/184

(under subclass 181) Logs comprising a drag device which is immersed in the fluid medium and is towed from the craft. The speed is usually measured by determining the force exerted on the towing line or by the extent of rotation of a rotary device on the drag.