Legal Opinion
Winslow Engineering Company v. Leroy R. Smith, an Individual, Doing Business as Rol-Pak Co.
Court of Appeals for the Ninth Circuit
Decided September 20, 1955No. 13551_1PublishedCited by 9 opinions
1Opinion of the Court
POPE, Circuit Judge.
The appellant as plaintiff below brought this action charging appelleedefendant with infringement of its Winslow & Moore Patent No. 2,345,849. The court below held the patent void for want of invention. Upon this appeal appellant assigns error in respect to the finding of want of invention and appellee asserts that the judgment must be affirmed not only for want of invention but for other reasons including the insufficiency of the claims. The patent, for a “lubricant purifier” discloses a replaceable filter element designed to filter lubricating oil or oil used for fuel in…
2Cases cited12 opinions
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.Supreme Court of the United States · 1951
- Cuno Engineering Corp. v. Automatic Devices Corp.Supreme Court of the United States · 1942
- Graver Tank & Mfg. Co. v. Linde Air Products Co.Supreme Court of the United States · 1949
- Smith v. SnowSupreme Court of the United States · 1935
- Pointer v. Six Wheel CorporationCourt of Appeals for the Ninth Circuit · 1949
7 more not listed; retrieve them via the Exa API.
3Cited by9 opinions
- Moist Cold Refrigerator Co. v. Lou Johnson Co.Court of Appeals for the Ninth Circuit · 1957
- Moist Cold Refrigerator Co. v. Lou Johnson Co.Court of Appeals for the Ninth Circuit · 1957
- Oregon Saw Chain Corporation, a Corporation v. McCulloch Motors Corporation, a CorporationCourt of Appeals for the Ninth Circuit · 1963
- National Sponge Cushion Co., Inc., a Corporation v. Rubber Corporation of CaliforniaCourt of Appeals for the Ninth Circuit · 1961
- Beatty Safway Scaffold Co. v. Up-Right, Inc., a CorporationCourt of Appeals for the Ninth Circuit · 1962
4 more not listed; retrieve them via the Exa API.