Legal Opinion
Lektophone Corp. v. Rola Co.
Court of Appeals for the Ninth Circuit
Decided September 23, 1929No. 5712PublishedCited by 3 opinions
1Opinion of the Court
WILBUR, Circuit Judge.
The appellant, being the owner and assignee of patents Nos. 1,271,529 and 1,271,527, issued to Marcus C. Hopkins, July 2, 1918, upon applications filed July 14, 1913, claims that these patents, and particularly claims 1 to 8, inclusive, of the former, and 29 and 30 of the latter, are infringed by a radio loud speaker manufactured by the appellee, and seeks the usual remedies, which were denied in the lower court.
The Hopkins patents were of sound-reproducing instruments for phonographs. The vibrating and sound-reproducing element, styled by the' patentee a tympanum, was…
2Cases cited23 opinions
- Eibel Process Co. v. Minnesota & Ontario Paper Co.Supreme Court of the United States · 1923
- Miller v. Eagle Manufacturing Co.Supreme Court of the United States · 1894
- Potts v. CreagerSupreme Court of the United States · 1895
- Tilghman v. ProctorSupreme Court of the United States · 1881
- Knapp v. MorssSupreme Court of the United States · 1893
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3Cited by3 opinions
- Magnavox Co. v. Hart & RenoCourt of Appeals for the Ninth Circuit · 1934
- Lensch v. Metallizing Co. of AmericaDistrict Court, S.D. California · 1941
- Hazeltine Corp. v. Emerson Television-Radio, Inc.District Court, S.D. New York · 1941