Legal Opinion
Barber-Colman Co. v. A. G. Redmond Co.
District Court, E.D. Michigan
Decided July 5, 1934No. 440PublishedCited by 2 opinions
1Opinion of the Court
TUTTLE, District Judge.
This suit involves United States patent No. 1,822,679, issued to Duncan J. Stewart and Edgar D. Lilja on September 8,1931. It has to do with small-size, alternating current induction motors of the core type. This type of motor consists of a stator, composed of steel laminations, with a portion of the stator encircled by a coil of copper wire-known as the “field coil." In these laminations is a circular opening into which a rotor is placed. The portions of the stator adjacent the rotor opening are known as the *509“stator poles.” The faces of those poles are divided into…
2Cases cited5 opinions
- United Drug Co. v. Ireland Candy Co.Court of Appeals for the Eighth Circuit · 1931
- Carbide & Carbon Chemicals Corp. v. Texas Co.Court of Appeals for the Fifth Circuit · 1929
- B. F. Goodrich Rubber Co. v. Gates Rubber Co.Court of Appeals for the Tenth Circuit · 1931
- Westinghouse Electric & Mfg. Co. v. Pittsburgh Transformer Co.District Court, W.D. Pennsylvania · 1926
- In re PrescottCourt of Customs and Patent Appeals · 1931
3Cited by2 opinions
- Barber-Colman Co. v. Sampsel Time Control, Inc.District Court, S.D. Illinois · 1948
- Warren Telechron Co. v. Waltham Watch Co.District Court, D. Massachusetts · 1936