.~ Comprising spaced, sheetlike members and fluid chamber therebetween {1}
2.23
.~.~ Including subdividing elements
DEFINITION
Classification: 52/2.23
Including subdividing elements:
(under subclass 2.22) Structure wherein a plurality of elements (e.g., webs), extending more or less transversely of, and fluid-tightly joined to, the members are provided for dividing the chamber into a plurality of smaller chambers.