Legal Opinion
Blanc v. Curtis
Court of Appeals for the Sixth Circuit
Decided April 17, 1941No. 8502PublishedCited by 15 opinions
1Opinion of the Court
ALLEN, Circuit Judge.
This is an appeal from a decree of the District Court holding two patents, issued to and owned by appellant, valid but not infringed. Appellee Sanger manufactures the devices alleged to infringe, and appellee Curtis uses them in his sewer cleaning service.
The Machine Patent
Patent 2,111,527, issued to Blanc March 15, 1938, is for a drain cleaner. Claim 4 of Ihe patent is the only one involved. It reads as follows:
“In a cleaner for drain pipes, the combination of a frame, a flexible shaft adapted to support a cutter element at one end and to be moved longitudinally into a…
2Cases cited9 opinions
- Sanitary Refrigerator Co. v. WintersSupreme Court of the United States · 1929
- Sun Ray Gas Corp. v. Bellows-Claude Neon Co.Court of Appeals for the Sixth Circuit · 1931
- National Battery Co. v. Richardson Co.Court of Appeals for the Sixth Circuit · 1933
- Baldwin Rubber Co. v. Paine & Williams Co.Court of Appeals for the Sixth Circuit · 1939
- Ford Motor Co. v. Gordon Form Lathe Co.Court of Appeals for the Sixth Circuit · 1937
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3Cited by15 opinions
- Fmc Corporation v. The F. E. Myers & Bro. Co.Court of Appeals for the Sixth Circuit · 1967
- The Maytag Company, a Corporation v. The Murray Corporation of America, a CorporationCourt of Appeals for the Sixth Circuit · 1963
- Flowers v. Austin-Western Co.Court of Appeals for the Seventh Circuit · 1945
- Blanc v. Spartan Tool Co.Court of Appeals for the Seventh Circuit · 1948
- Mueller v. CampbellDistrict Court, S.D. Ohio · 1946
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