发明名称 Cleaning device
摘要 A cleaning device for removal of sand and/or debris from the bottom of a tank. The device comprises a cylinder having an opening at a first end which is smaller than the cylinder. A handle is mounted on a second end of the cylinder. A vent opening is formed in the cylinder adjacent the handle. A valve is mounted on the handle to open and close the opening.
申请公布号 US4896392(A) 申请公布日期 1990.01.30
申请号 US19880173866 申请日期 1988.03.28
申请人 HULL, HAROLD L.;PARTEE, CHARLES 发明人 HULL, HAROLD L.;PARTEE, CHARLES
分类号 A61H33/00;B08B9/08;E04H4/16 主分类号 A61H33/00
代理机构 代理人
主权项
地址