US PATENT SUBCLASS 418 / 224
VALVED VANE OR ABUTMENT

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

Internet Version by PATENTEC © 1999      Terms of Use


418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

224VALVED VANE OR ABUTMENT

DEFINITION

Classification: 418/224

(under the class definition) Apparatus in which there is provided a valve means mounted on a working fluid partition element of the device.