Mark Identification
THE KEYSTONE OF FILTER QUALITY
Serial Number
72312204
Filing Date
Nov 14, 1968
Registration Date
Jun 8, 1971
Trademark by
Classification Information
FILTER MEDIA IN GENERAL AND PLEATED SHEET FILTER MEDIA AND OTHER FILTER COMPONENTS, SUCH AS END CAPS, CENTER TUBES, HOUSINGS, CARTRIDGES AND FILTERS IN PARTICULAR
Natural Agricultural Products