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Pat 567818
Summary
U.S. Patent 0,567,818 - w:Electrical Condenser - 1896 September 15 - Condenser constructed or provided with means for exclusion of air or gas; Armature composed of a conducting liquid; Armatures in two separate bodies of conducting liquid insulated electrically and contained in a receptacle; Insulating liquid seal on the surface of the conductive liquids.
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Date
1896
Source
Originally uploaded at:
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Public Domain