Permagrid Trademarks

PERMAGRID
X-RAY FILM CASSETTE HOLDER FOR MAMMOGRAPHY
Cancelled  ·  July 13, 1987  ·  73671410  · 
PERMAGRID
CERAMIC TILE BLOCKS FOR WATER COOLING TOWERS
Cancelled  ·  March 2, 1987  ·  73647213  · 
PERMAGRID
Ceramic Tile Blocks for Water Cooling Towers
Cancelled  ·  October 12, 1978  ·  73188995  ·