Legal Opinion
Rex Chainbelt Inc. v. Borg-Warner Corporation, Rex Chainbelt Inc. v. Carman Industries, Inc.
Court of Appeals for the Seventh Circuit
Decided May 18, 1973No. 71-1596, 71-1597PublishedCited by 21 opinions
1Opinion of the Court
HASTINGS, Senior Circuit Judge.
On October 5, 1965, George D. Dumbaugh. filed a patent application, Serial No. 493,197. Patent No. 3,251,457 issued to him on May 17, 1966. 1 The Dumbaugh patent has been described as being generally directed to “the varying of the feed rates of vibratory conveyors by varying the voltage applied to a squirrel cage type of motor which drives the feeder or conveyor.” 2 Alvin G. Westerman applied for a patent on October 26, 1965. His application bears Serial No. 505,284. 3 Pursuant to 35 U.S.C.A. § 135, the Commissioner of Patents determined that the Westerman…
2Cases cited22 opinions
- The Barbed Wire PatentSupreme Court of the United States · 1892
- Morgan v. DanielsSupreme Court of the United States · 1894
- Sanford v. KepnerSupreme Court of the United States · 1952
- Agawam Co. v. JordanSupreme Court of the United States · 1869
- Mason v. HepburnCourt of Appeals for the D.C. Circuit · 1898
17 more not listed; retrieve them via the Exa API.
3Cited by21 opinions
- Leo J. Fregeau v. Gerald J. MossinghoffCourt of Appeals for the Federal Circuit · 1985
- Rohm and Haas Co. v. Dawson Chemical Co., Inc.District Court, S.D. Texas · 1983
- In re ReuterCourt of Customs and Patent Appeals · 1981
- Velsicol Chemical Corporation v. Monsanto CompanyCourt of Appeals for the Seventh Circuit · 1978
- Ralston Purina Co. v. Far-Mar-Co, Inc.District Court, D. Kansas · 1984
16 more not listed; retrieve them via the Exa API.