Opinion ID: 474933
Heading Depth: 2
Heading Rank: 1

Heading: Sweet's Invention

Text: The Sweet patent is directed to a 2 direct writing signal recording system which writes on a record medium by projecting a stream of writing fluid in the form of a succession of uniformly spaced droplets. The droplets are charged electrostatically in accordance with instantaneous signal values [independent of one another] and then deflected electrostatically in accordance with the charges carried by the droplets. 3 U.S.Pat. No. 3,596,275 Abstract; see col. 1. 4 A complete description of Sweet's patented invention and other relevant facts are set forth in the opinions of the district court in this case and in another case relating to the same patent. Mead Digital Systems, Inc. v. A.B. Dick Co., 521 F.Supp. 164, 213 USPQ 328 (S.D.Ohio 1981), aff'd, 723 F.2d 455, 221 USPQ 1035 (6th Cir.1983). 2 Familiarity with these facts is presumed.