Patent US1928621 - Apparatus for cleansing or blasting castings or other articles - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentswww.google.comhttp://www.google.com/patents/US1928621?utm_source=gb-gplus-sharePatent US1928621 - Apparatus for cleansing or blasting castings or other articlesAdvanced Patent SearchPublication numberUS1928621