Mark Identification
O K
Serial Number
75639128
Filing Date
Feb 9, 1999
Registration Date
Mar 21, 2000
Trademark by
PROPPER MANUFACTURING CO. INC.
Active Trademark
Classification Information
sterilizer control strips having imprinted thereon a pigment which, after insertion in a sterilizer, changes color after a predetermined period of exposure to high temperature, thus indicating proper sterilization of the contents of the sterilizer in which the control strips are inserted
Electrical and Scientific Apparatus