Legal Opinion
W-R Co. v. Sova
Court of Appeals for the Sixth Circuit
Decided September 18, 1939No. 7883PublishedCited by 12 opinions
1Opinion of the Court
HAMILTON, Circuit Judge.
This is an appeal by appellant, the W-R Company, from a decree of the District Court restraining it from the alleged infringement of appellee’s mechanical patent number 1,571,813, for which he applied April 30, 1925, and which was issued February 2, 1926. The patent in suit relates to a fixture which appellee devised and attached to a piston ring grinding machine. His appliance removed the burr or wire edge from the periphery of the ring while being ground and with the same machine.
It is claimed by appellant that appellee had dedicated his appliance to public use more…
2Cases cited7 opinions
- Smith & Griggs Manufacturing Co. v. SpragueSupreme Court of the United States · 1887
- Electric Storage Battery Co. v. ShimadzuSupreme Court of the United States · 1939
- Austin MacHinery Co. v. Buckeye Traction Ditcher Co.Court of Appeals for the Sixth Circuit · 1926
- Buser v. Novelty Tufting Machine Co.Court of Appeals for the Sixth Circuit · 1907
- Jenner v. BowenCourt of Appeals for the Sixth Circuit · 1905
2 more not listed; retrieve them via the Exa API.
3Cited by12 opinions
- Epstein v. United StatesCourt of Appeals for the Sixth Circuit · 1949
- Muse v. MellinDistrict Court, S.D. New York · 1962
- Thompson v. American Tobacco Co.Court of Appeals for the Fourth Circuit · 1949
- Piet v. United StatesDistrict Court, S.D. California · 1959
- Milford A. Campbell, Plaintiff-Counter-Defendant v. Spectrum Automation Company, Defendant-Counter-PlaintiffCourt of Appeals for the Sixth Circuit · 1975
7 more not listed; retrieve them via the Exa API.