Electrete Trademarks

ELECTRETE
Electrostatically charged filter media made of organic or inorganic fibers for use in medical applications for the filtration of air
Abandoned  ·  April 24, 2006  ·  78867930  · 
electrete
ELECTRETE
Electrostatically charged filter media made of organic or inorganic fibers for use in medical applications for the filtration of air
Abandoned  ·  November 12, 1997  ·  75388739  · 
ELECTRETE
air cleaning filters for residential and commercial air handling equipment
Cancelled  ·  April 11, 1997  ·  75273286  · 
ELECTRETE
air cleaning filters for residential and commercial air handling equipment
Abandoned  ·  June 17, 1994  ·  74538970  ·