71557790
May 25, 1948
Oct 31, 1950
ELECTRIC PNEUMATIC AND GASOLINE DRIVEN VIBRATING SPADES FOR VIBRATING UNSET CONCRETE AND COMPACTING MATERIALS, EXTERNAL VIBRATING UNITS ADAPTED TO BE ATTACHED TO MOLDS, CASTING MACHINES, HOPPERS AND OTHER OBJECTS TO VIBRATE THE SAME, BRACKETS AND LOCKING LEVERS FOR SECURING EXTERNAL VIBRATING UNITS TO THE OBJECTS TO BE VIBRATED
Yarns and Threads