Microfilter Trademarks

MICROFILTER
cathode-ray tubes
Cancelled  ·  March 23, 1995  ·  74650762  · 
MICROFILTER
optical filters and interferometers
Cancelled  ·  February 20, 1990  ·  74030206  · 
MICROFILTERS
filters and filter cartridges for removing contaminants from a fluid stream
Abandoned  ·  April 28, 1998  ·  75475586  ·