US PATENT SUBCLASS 210 / 321.86
.~ Pleated membrane

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

321.6  DF  CASING DIVIDED BY MEMBRANE INTO SECTIONS HAVING INLET(S) AND/OR OUTLET(S) {15}
321.86.~ Pleated membrane

DEFINITION

Classification: 210/321.86

Pleated membrane:

(under subclass 321.6) Apparatus wherein said semipermeable membrane is pleated, i.e., folded back and forth.