73202957
Feb 7, 1979
Mar 8, 1983
Sterilized or Sterilizable Disposable Filtration Elements with Different Filter Surfaces, Their Sizes and the Sizes of Their Pores for Sterlization and High Degree Cleaning of Liquids + Gases in the Electronic-, Pharmaceutical-, Food-, Delicacies-, Cosmetic-, and General Chemical Industries
Environmental Control Apparatus