August 1930 Electrical and scientific apparatus Trademarks by day
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Electrical and scientific apparatus Trademarks filed in August 1930
DUSTETTE

DUSTETTE

Filed: August 18, 1930
ELECTRIC SUCTION CLEANERS
Owned by: HOOVER COMPANY, THE
Serial Number: 71304724

DIAMOND

DIAMOND

Filed: August 4, 1930
GAUGE GLASSES, WATER COLUMNS, AND WATER GAUGES
Owned by: DIAMOND POWER INTERNATIONAL, LLC
Serial Number: 71304190