Fluid utilized in apparatus for purifying air
Fluorinated electret
Fluorinated electret
Fluorinated electret
Fog monitor
Fogged, direct positive silver halide emulsions containing a ble
Fogged, direct-positive silver halide emulsion containing desens
Formation of azine dyes
Formation of metal images using reducible non-noble metal salts
Formation of openings in dielectric sheet
Formation of pattern using acrylamide-diacetoneacrylamide copoly
Formazan images by physical development of catalytic metal nucle
Forward, stowable seat and back
Frame for electrostatic precipitator cell
Frameless electrostatic air filter with internal support grill
Frameless electrostatic air filter with internal support grill
Free radical photosensitive compositions containing bis-sulfides
Free radical photosensitive compositions with improved sensitivi
Free radical photosensitive compositions with improved sensitivi
Free radical photosensitive materials