Legal Opinion
British Acoustic Films, Ltd. v. Electrical Research Products, Inc.
District Court, D. Delaware
Decided September 22, 1939No. Nos. 1240, 1241PublishedCited by 1 opinion
1Opinion of the Court
NIELDS, District Judge.
These two suits charge patent infringement of the same patents. They were tried together. For the purposes of these suits it is agreed that the apparatus of each defendant is substantially the same. The defenses are invalidity and non-infringement.
Plaintiff is British Acoustic Films, Limited, a British corporation. It is the owner of patent No. 1,597,819 for a “Device for Feeding Acoustic Films at Constant Speed”, issued to Arnold Poulsen and Axel Carl George Petersen August 31, 1926 upon application filed July 9, 1924 (hereinafter referred to as the first patent), and…
2Cases cited6 opinions
- Boyden Power-Brake Co. v. Westinghouse Westinghouse v. Boyden Power-Brake Co.Supreme Court of the United States · 1898
- Altoona Publix Theatres, Inc. v. American Tri-Ergon Corp.Supreme Court of the United States · 1935
- Electric Cable Joint Co. v. Brooklyn Edison Co.Supreme Court of the United States · 1934
- American Road MacHine Co. v. Pennock & Sharp Co.Supreme Court of the United States · 1896
- Elevator Supplies Co. v. Graham & Norton Co.Court of Appeals for the Third Circuit · 1930
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3Cited by1 opinion
- British Acoustic Films, Ltd. v. Electrical Research Products, Inc.Court of Appeals for the Third Circuit · 1940