Legal Opinion
In re Zenk
District Court, District of Columbia
Decided June 2, 1920No. 1309PublishedCited by 2 opinions
Appeal from Commissioner of Patents. In the matter of the application of Charles C. Zenk for a patent for a moM and method or process of making commutators. Prom a decision rejecting the application, he appeals.
1Opinion of the Court
VAN ORSDEE, Associate Justice.
This appeal is from the decision of the Commissioner of Patents rejecting the application of appellant Zenk for a patent for a mold and method or process of making commutators for electric generators and motors. Of the seven claims, the following three are illustrative:
“3. The method of making a commutator which consists in arranging commutator segment bars circumferentially in spaced relation, surrounding certain sides of said bars with insulating material having the property of hardening under the action of heat and pressure, and applying heat and pressure to…
2Cases cited2 opinions
- The Suffolk Company v. HaydenSupreme Court of the United States · 1866
- Ide v. Trorlicht, Duncker & Renard Carpet Co.Court of Appeals for the Eighth Circuit · 1902
3Cited by2 opinions
- In re BurtCourt of Appeals for the D.C. Circuit · 1928
- Cowles Co. v. Frost White Paper Mills, Inc.District Court, S.D. New York · 1948