Horace Gray, Dunham v. Dennison Manufacturing Company…
“ The patent of November 24, 1885, has clearly not been infringed by the defendant; for the peculiar feature of this patent consists in the flap being constructed so that it can be opened, and the contents taken out, without tearing the envelope or removing or breaking the fastenings, whereas, in the defendant's envelope, that flap is fastened down so that it cannot be opened without injury to it, or to the envelope, and the contents are taken out by opening a flap, no more firmly secured than with gum, at the opposite end of the envelope. ”
