April 1939 Electrical and scientific apparatus Trademarks by day
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Electrical and scientific apparatus Trademarks filed in April 1939
FLASH-O-LENS

FLASH-O-LENS

Filed: April 29, 1939
ELECTRICALLY LIGHTED MAGNIFYING LENS MOUNTING AND ENVELOPE SEALING UNITS
Owned by: E. W. PIKE & CO., INC.
Serial Number: 71418863

LEVOLIER

LEVOLIER

Filed: April 27, 1939
ELECTRIC LAMP SOCKETS, ELECTRIC CANDLE SOCKETS, ELECTRIC SWITCH PORCELAIN BRACKETS, ELECTRIC SWITCH CLUSTERS FOR LAMPS,…
Owned by: APPLETON GRP LLC
Serial Number: 71418783

INDUCTUNER

INDUCTUNER

Filed: April 20, 1939
VARIABLE INDUCTANCE DEVICES, INDUCTIVE TUNING DEVICES, VARIABLE INDUCTANCE TUNING DEVICES, CONTINUOUSLY VARIABLE SLIDE WIRE…
Owned by: Duracap International Incorporated
Serial Number: 71418490

EDISON

EDISON

Filed: April 19, 1939
ELECTRICAL SWITCHES AND ELECTRICAL RELAYS.
Owned by: COOPER US, INC.
Serial Number: 71418443

TELESIGN

TELESIGN

Filed: April 13, 1939
Gaseous-Tube and Filament Lamp Electric Signs, Electric Sign Flashing and Control Devices, and/or Equipment for the Above…
Owned by: NAXON TELESIGN CORPORATION (ILL. CORP.)
Serial Number: 71418205

CENTRUM

CENTRUM

Filed: April 10, 1939
Radio Sets, Electric Sound Recording and Reproducing Apparatus, Loud Speakers and Loud Speaker Units of the Microphone Type…
Owned by: Telefonaktiebolaget L.M. Ericsson
Serial Number: 71418125

PHOTOSWITCH

PHOTOSWITCH

Filed: April 5, 1939
ELECTRIC APPARATUS FOR VARYING THE CURRENT INTENSITY IN A CONTROLLED CIRCUIT, DEPENDENT UPON VARIATIONS OF RADIANT ENERGY…
Owned by: ROCKWELL AUTOMATION, INC.
Serial Number: 71417889

SILVA

SILVA

Filed: April 3, 1939
Measuring Instruments, Optical Geodetic, Nautical, and Photographic Apparatus-Namely, Magnifying Glasses, Cameras, Telescopes…
Owned by: JOHNSON WORLDWIDE ASSOCIATES, INC.
Serial Number: 71417790