SWAN, Circuit Judge.
This is a suit for patent infringement brought by Minton Manufacturing Company, as owner, and S. M. Frank & Co., Inc., as exclusive licensee, of patent No. 1,919,959, issued to Paul H. Minton, July 25, 1933, on an application filed February 6, 1932. The patent is for a removable absorbent filter cartridge for pipes, cigarette holders and similar tobacco-smoking appliances. Claim 8, the only claim in suit, was held valid and infringed. It reads...
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