Keywords: Soap shaker USpatent 1473783.png en Household apparatus for holding bar soap pieces When shaken in water suds are formed 1922-09-13 date on picture Soap shaker USpatent 1473783 png picture dated 1922 Source United States Patent and Trademark Office www uspto gov Link to patent http //patft uspto gov/netacgi/nph-Parser Sect2 PTO1 Sect2 HITOFF p 1 u /netahtml/PTO/search-bool html r 1 f G l 50 d PALL RefSrch yes Query PN/1473783 other versions PD-USGov Soap Cleaning equipment Laundry equipment Cleaning equipment |