Legal Opinion
Mantz v. Kersting
District Court, S.D. California
Decided October 14, 1939No. 59-Y CivilPublishedCited by 9 opinions
1Opinion of the Court
YANKWICH, District Judge.
Plaintiffs charge infringement by the defendants of Mantz Letters Patent No. 1,898,584, issued February 21, 1933, re-, lating to a spring sash balance, and Mantz Letters Patent No. 2,128,007, issued August '23, 1938, relating to a combination *707hook and glider, to be used with a spring sash balance.
The art is old. Neither invention is primary. They must, therefore, be limited to the very structure described. Bridge v. Excelsior Co., 1881, 105 U.S. 618, 26 L.Ed. 1190; Boyd v. Janesville Hay-Tool Co., 1895, 158 U.S. 260, 267, 15 S.Ct. 837, 39 L.Ed. 973; Kokomo Fence…
2Cases cited47 opinions
- Continental Paper Bag Co. v. Eastern Paper Bag Co.Supreme Court of the United States · 1908
- Seymour v. OsborneSupreme Court of the United States · 1871
- McClain v. OrtmayerSupreme Court of the United States · 1891
- MacHine Co. v. MurphySupreme Court of the United States · 1878
- Sanitary Refrigerator Co. v. WintersSupreme Court of the United States · 1929
42 more not listed; retrieve them via the Exa API.
3Cited by9 opinions
- City of Chicago v. LoitzAppellate Court of Illinois · 1973
- Blanchard v. J. L. Pinkerton, Inc.District Court, S.D. California · 1948
- Ganter v. Unit Venetian Blind Supply Corp.District Court, S.D. California · 1949
- Byron Jackson Co. v. WilsonDistrict Court, S.D. California · 1942
- Elrick Rim Co. v. Reading Tire Machinery Co.District Court, S.D. California · 1957
4 more not listed; retrieve them via the Exa API.