Bruegger v. Marzall

McLAUGHLIN, District Judge.

This action was instituted pursuant to the provisions of R.S. 4915, 35 U.S.Code, § 63, seeking the issuance by the Commissioner of Patents of a patent to the plaintiff Criscom-Russell Company on a new method of making finned heat exchanger tubes. Plaintiffs claim No. 25 regarded by the patent office as illustrative of the rejected claims consisted of the following:

“25. The method of making fin tubing which comprises furrowing the surface of the tube by a plowing action turning up material from below the surface and leaving it attached to the tube along the edges of…