Legal Opinion
Kodel Electric & Mfg. Co. v. Warren Telechron Clock Co.
Court of Appeals for the Sixth Circuit
Decided January 16, 1933No. 6190PublishedCited by 12 opinions
1Opinion of the Court
HICKENLOOPER, Circuit Judge.
Defendant below appeals from a decree of validity and infringement of claims 8 and 9 of patent to Henry E. Warren, No. 1,502,494, issued July 22, 1924, for “Time-indicating Apparatus.” Claim 8 is typical, and is printed in the margin. The defendant asserts both invalidity of the claims in suit and non-infringement.
At the time of the application for tho patent in suit, it was well known that synchronous motor clocks, operated by central station alternating current, would keep accurate time provided the current was kept uniformly at that cycle to which the clock…
2Cases cited13 opinions
- Motion Picture Patents Co. v. Universal Film Manufacturing Co.Supreme Court of the United States · 1917
- Carbice Corp. of America v. American Patents Development Corp.Supreme Court of the United States · 1931
- Henry v. A. B. Dick Co.Supreme Court of the United States · 1912
- Morgan Envelope Co. v. Albany Perforated Wrapping Paper Co.Supreme Court of the United States · 1894
- De Forest Radio Telephone Co. v. United StatesSupreme Court of the United States · 1927
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3Cited by12 opinions
- Williams Mfg. Co. v. United Shoe MacH. CorporationCourt of Appeals for the Sixth Circuit · 1941
- Oxford Varnish Corporation v. Ault & Wiborg CorporationCourt of Appeals for the Sixth Circuit · 1936
- Landis MacHinery Co. v. Chaso Tool Co.Court of Appeals for the Sixth Circuit · 1944
- Perfect Circle Co. v. Hastings Mfg. Co.Court of Appeals for the Sixth Circuit · 1937
- Micromatic Hone Corp. v. Mid-West Abrasive Co.Court of Appeals for the Sixth Circuit · 1949
7 more not listed; retrieve them via the Exa API.