September 1931 Nonmetallic building materials Trademarks by day
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Nonmetallic building materials Trademarks filed in September 1931
BRONZOGRIT

BRONZOGRIT

Filed: September 17, 1931
FLOOR PLATES AND DOOR THRESHOLDS
Owned by: WOOSTER PRODUCTS, INC.
Serial Number: 71319160

EDIPHONE

EDIPHONE

Filed: September 12, 1931
MACHINES FOR SHAVING SOUND RECORD TABLETS, AND ACCESSORIES THEREFOR
Owned by: THOMAS A. EDISON, INCORPORATED
Serial Number: 71318980