April 1921 Environmental control apparatus Trademarks by day
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Environmental control apparatus Trademarks filed in April 1921
FILTER-CEL
Filed: April 26, 1921
Material for Arresting and Separating Impurities or Other Matter from Fluids
Owned by: IMERYS MINERALS CALIFORNIA, INC.
Serial Number: 71146755
INGERSOLL-RAND
Filed: April 26, 1921
[ STEAM-ENGINES, ] STEAM TURBINES, TURBO-COMPRESSORS, TURBO-BLOWERS, TURBO-EXHAUSTERS, RECIPROCATING COMPRESSORS, [ PORTABLE…
Owned by: INGERSOLL-RAND COMPANY
Serial Number: 71146768
CUNO
Filed: April 14, 1921
ELECTRIC LAMPS, ELECTRIC STARTING DEVICES FOR GAS ENGINES, ELECTRIC IGNITION DEVICES FOR GAS ENGINES, AND ELECTRIC CIGAR…
Owned by: CUNO ENGINEERING CORPORATION, THE
Serial Number: 71146166
VITRIFUSED
Filed: April 4, 1921
Flue-Linings
Owned by: MALLEABLE IRON RANGE COMPANY (WIS. CORP.)
Serial Number: 71145698
