Shannon v. Bruner

This is a suit for infringement of letters patent on concrete pavements, granted to John J. Schillinger, July 19, 1870, and reissued under date of May 2, 1871. This patent has been several times before the various federal courts in cases of alleged infringement, and the decisions are not wholly in accord as to what is covered by the patent. The disagreement appears to have arisen since a disclaimer was filed by the patentee in 1875, whereby he withdrew certain parts of the specifications of the reissued letters. The circuit courts have very generally held the invention, since the disclaimer,…