US PATENT SUBCLASS 267 / 64.14
.~.~ Including chamber at sub-atmospheric pressure

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

Internet Version by PATENTEC © 1999      Terms of Use


267 /   HD   SPRING DEVICES

2  DF  VEHICLE {14}
64.11  DF  .~ Comprising compressible fluid {6}
64.14.~.~ Including chamber at sub-atmospheric pressure

DEFINITION

Classification: 267/64.14

Including chamber at sub-atmospheric pressure:

(under subclass 64.11) A device also including a second compartment, operatively associated with the first compartment, which is partially or completely evacuated.

(1) Note. The evacuation may take place either prior to, or during, operation of the device.