Legal Opinion
Moore v. Baltimore & O. R.
Court of Appeals for the Fourth Circuit
Decided January 14, 1930No. 2914PublishedCited by 6 opinions
1Opinion of the Court
PARK HR, Circuit Judge.
This was a suit to enjoin infringement of patent No. I, 502,050, covering dust suction apparatus for use in connection with belt conveyors in grain elevators. The defendant denies infringement and avers that the claims of the patent relied on are invalid for lack of invention and because of anticipation and prior use. The learned judge below, after an exhaustive analysis of the evidence, held the claims invalid "and dismissed the bill. Complainant has appealed.
As is generally known, grain is transported in elevators by means of belt conveyors. The use of these causes…
2Cases cited9 opinions
- Atlantic Works v. BradySupreme Court of the United States · 1883
- Hailes v. Van WormerSupreme Court of the United States · 1874
- Lovell Manufacturing Co. v. CarySupreme Court of the United States · 1893
- Berlin Mills Co. v. Procter & Gamble Co.Supreme Court of the United States · 1920
- New York Scaffolding Co. v. Liebel-Binney Construction Co.Supreme Court of the United States · 1920
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3Cited by6 opinions
- Cornec v. Baltimore & OR Co.Court of Appeals for the Fourth Circuit · 1931
- Demco v. Doughnut MacH. CorporationCourt of Appeals for the Fourth Circuit · 1932
- Produce Exchange Stock Clearing Ass'n v. HelveringCourt of Appeals for the Second Circuit · 1934
- Orrison v. C. Hoffberger Co.Court of Appeals for the Fourth Circuit · 1951
- Noble Co. v. C. S. Johnson Co.District Court, E.D. Illinois · 1956
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