69 F. 405 | 6th Cir. | 1895
after stating the facts as above, delivered the opinion of the court.
The state of the art with respect of hay elevators was such that, even if thé complainant’s patent can be sustained, it must be limited to the exact form shown. In the hay elevator of C. A. Miller patent, July 19,1870, use is made of two parallel wooden tracks, having vertical flanges and horizontal flanges arranged in parallel lines, and secured to each other by spacing blocks at the end of the beams forming the track, and suspended by hooks to the joists of the barn. The traveling carriage is on trolley wheels, which run upon the horizontal flanges of the tracks, and the hay is suspended by a rope which hangs down from the trolley carriage between the two tracks. In the Gordon F. Prindle patent for hanging sliding doors, angle irons are used, arranged in parallel lines on top of the casings or frames of the doors or gates. The trolley wheels run upon the horizontal flanges of the angle irons, and are held into position by the vertical flanges thereof, and the door is suspended to the axle connecting the two wheels by hangers which pass down between the angle irons. In Corbin’s patent for an improvement in railway tracks, angle irons are used with vertical and horizontal flanges held parallel to each other by tubes extending from the inside of one vertical flange
“Upon the assumption that, owing to the previous condition of the art, Boyd is to be restricted to the exact and specific devices claimed by him as novel, we do not deem it necessary to determine whether either Boyd or Strickier invented anything, because we think that the appellant has failed to show that the defendants have used the particular devices to which Boyd*408 can. be considered entitled. Our discussion, therefore, will be confined to the question of infringement. As both applications were pending in the patent office at the same time, and as the respective letters were granted, it is obvious that it must have been the judgment of the officials that there was no occasion for an interference, and that there were features which distinguished one invention from the other. In American Nicolson Pavement Co. v. Oity of Elizabeth, 4 Fish. Pat. Cas. 189,1 Mr. Justice Strong said: ‘The grant of the letters patent was virtually a decision of the patent office that there is a substantial difference between the inventions. It raises the presumption that, according to the claims of the latter patentees, this invention is not an infringement of the earlier patent.’ It would scorn to be evident that as the purpose of the invention was the same, and as the principal parts of the respective machines described were substantially similar, it was also the judgment of the office that the distinguishing features were to be found in some of the smaller, and perhaps less important, devices described and claimed. Burns v. Meyer, 100 U. S. 671.”
This language has full application to the case at bar, for, though the patents were not pending in the office at the same time, the presumption from the granting of the second patent, in view of the previous issue of the first, would not seem to be different.
We do not pass upon the question of the validity of the Ney patent, because, in the view just stated, it is unnecessary. The same conclusion renders it unnecessary for us to consider the estoppel which the court below held prevented the defendant from attacking the validity of the complainant’s patent. The decree of the lower-court, therefore, is reversed, with directions to dismiss the bill.
Fed. Cas. No. 312.