Snow v. Lake Shore & Michigan Southern Ry. Co.
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121 U.S. 617 (1887)
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U.S. Supreme Court
Snow v. Lake Shore & Michigan Southern Ry. Co., 121 U.S. 617 (1887)
Snow v. Lake Shore and Michigan Southern Railway Company
Argued April 19, 1887
Decided May 2, 1887
121 U.S. 617
The first claim in letters patent No. 121,933, granted to the Buffalo Dental Manufacturing Company as assignee of George B. Snow June 11, 1872, for a new and useful improvement in steam bell ringers is limited to a combination in which the piston and piston rod are detached from each other, and is not infringed by the use of steam bell ringers constructed and operated in conformity to the drawings and specifications of letters patent granted August 20, 1874, to Charles H. Hudson for a new and useful improvement in steam bell ringing apparatus.
This was a bill in equity to restrain an alleged infringement of letters patent. Decree dismissing the bill, from which the complainants appealed. The case is stated in the opinion of the Court.