Ajax Forge Co. v. Pettibone, Mulliken & Co.
Court of Appeals for the Seventh Circuit
Appeal from' the Circuit Court of the United States for the Northern Division of the Northern District of Illinois.
1Opinion of the Court
BAKER, Circuit Judge.
Appellant unsuccessfully sought to hold appellees for infringement of letters patent No. 651,413, June 12, 1900, to Calvert, assignor, for improvements in switch rods.
*749The structure that is exhibited in the drawings and described in the specification belongs to a class of appliances for adjusting the operative length of the tiebar that couples the point rails of a split switch, and consists of the following elements in combination: A rod having an ear thereon extending parallel therewith to form a jaw; a circular opening in the ear; a notch on one side of this opening ; a…
2Cases cited2 opinions
- Roemer v. PeddieSupreme Court of the United States · 1889
- Phoenix Caster Co. v. SpiegelSupreme Court of the United States · 1890
3Cited by1 opinion
- American Grass Twine Co. v. ChoateCourt of Appeals for the Seventh Circuit · 1907