Legal Opinion
Hazeltine Corp. v. National Carbon Co.
Court of Appeals for the Second Circuit
Decided February 2, 1931No. 261PublishedCited by 3 opinions
1Opinion of the Court
MANTON, Circuit Judge.
Tho Hazeltine patent sued on, claims 1, 2, 5, and 13, is for plate circuit neutralization, a specific form of eliminating the undesirable effects of regeneration in audion amplifiers. Hazeltine Corp. v. Wildermuth (C. C. A.) 34 F.(2d) 635. The court found infringement as well as validity. The principal argument against validity below and here is an anticipation urged in the form of the 'BC — 59—A army amplifier. We reiterated onr belief in the validity of this patent in Jones v. Freed-Eiseman Radio Corp., 47 F. (2d) 174, decided January 5,1931. We have pointed out an…
2Cases cited1 opinion
- Hazeltine Corp. v. WildermuthCourt of Appeals for the Second Circuit · 1929
3Cited by3 opinions
- Hazeltine Corporation v. Radio Corporation of AmericaDistrict Court, S.D. New York · 1931
- Hazeltine Corporation v. Radio CorporationDistrict Court, S.D. New York · 1937
- Hazeltine Corp. v. Radio Corp.Court of Appeals for the Second Circuit · 1932