72114557
Feb 27, 1961
Aug 14, 1962
ELECTRICALLY OPERATED SONIC ALARM AND ELECTRIC SWITCH THEREFOR, OR THE EQUIVALENT THEREOF, COMPRISING A VEHICULAR ALARM USED TO ALERT THE DRIVER AND OTHERS IN HIS VICINITY THAT THE MOVEMENT CONTROL OF THE VEHICLE IS SET TO REQUIRE THE NEXT MOVEMENT OF THE VEHICLE TO BE IN THE REVERSE DIRECTION
Housewares and Glass