| 摘要 |
<p>1,084,296. Aerating waters. HEINRICH KOPPERS G.m.b.H. June 2, 1966 [July 13, 1965], No. 24680/66. Heading C1C. [Also in Division B1] A floating Simplex centrifuge can be used to aerate rivers, lakes, effluent ponds, large clarifying basins and other natural and artificial liquid catchments.</p> |
