MICROFIL by PUROLATOR FACET, INC. (Track this)
Intl: (011) Environmental control apparatus US: 031 Filing date: 04-Feb-1960 Serial number: 72090307
MICROFILM by KERR CORPORATION (Track this)
Intl: (001) Chemicals US: 006 Filing date: 30-Jul-1945 Serial number: 71486492