May 1924 Electrical and scientific apparatus Trademarks by day
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Electrical and scientific apparatus Trademarks filed in May 1924
POLYPHASE DUPLEX

POLYPHASE DUPLEX

Filed: May 29, 1924
(CALCULATING) SLIDE RULES
Owned by: KEUFFEL & ESSER COMPANY
Serial Number: 71197820

LOG LOG DUPLEX

LOG LOG DUPLEX

Filed: May 29, 1924
"CALCULATING) SLIDE RULES
Owned by: KEUFFEL & ESSER COMPANY
Serial Number: 71197821

GAERTNER

GAERTNER

Filed: May 24, 1924
MEASURING TELESCOPES, MICROMETER SLIDES AND ATTACHMENTS, MICROSCOPE SUPPORTS, SPHEROMETERS, TEST PLANES FOR USE WITH SPHEROMETERS…
Owned by: GAERTNER SCIENTIFIC CORPORATION, THE
Serial Number: 71197535

ROMEX

ROMEX

Filed: May 22, 1924
INSULATED ELECTRICAL WIRE AND CABLE
Owned by: GK TECHNOLOGIES, INCORPORATED
Serial Number: 71197452

SINDANYO

SINDANYO

Filed: May 13, 1924
Composition Consisting Principally of Asbestos for Use for Electrical Insulation
Owned by: Tac Construction Materials Limited
Serial Number: 71196949

COTO

COTO

Filed: May 6, 1924
RADIO RECEIVING, DETECTING, AND AMPLIFYING APPARATUS AND PARTS THEREOF-NAMELY, ELECTRICAL COILS
Owned by: COTO-COIL CO.
Serial Number: 71196651

NATIONAL

NATIONAL

Filed: May 2, 1924
BATTERIES
Owned by: STRYTEN ENERGY LLC
Serial Number: 71196471