Powerfilter Trademarks

POWERFILTER
Photonic processors, namely, thin-film dielectric filter-based WDM multiplexers
Cancelled  ·  January 13, 2000  ·  75894921  · 
powerfilter
POWERFILTER
computer software feature for use in connection with data entry and data management and analysis
Cancelled  ·  December 14, 1993  ·  74538718  · 
POWERFILTER
FILTER APPARATUS
Abandoned  ·  October 18, 1983  ·  73448580  ·