Legal Opinion
In Re Laughlin
Court of Customs and Patent Appeals
Decided April 22, 1931No. Patent Appeal 2684PublishedCited by 9 opinions
1Opinion of the Court
GARRETT, Associate Judge.
Laughlin appealed from a decision of the Board of Appeals of the United States Patent Office, affirming a decision of the Examiner denying seven claims, numbered 12 to 18, inclusive, being all the claims of the application, for a “method of hardening the surfaces of steel castings.”
We quote Nos. 12, 13, and 17, as being fairly representative:
“12. The method of treating metallic castings or the like comprising the steps of first heating the casting to a tempering temperature, then substantially, uniformly and simultaneously subjecting the surface thereof to be treated…
2Cases cited11 opinions
- Thomson-Houston Electric Co. v. Elmira & H. Ry. Co.Court of Appeals for the Second Circuit · 1896
- Union Typewriter Co. v. L. C. Smith & Bros.U.S. Circuit Court for the District of Western Pennsylvania · 1909
- Wirebounds Patents Co. v. Saranac Automatic MacH. Corp.Court of Appeals for the Sixth Circuit · 1930
- Otis Elevator Co. v. Portland Co.Court of Appeals for the First Circuit · 1903
- Morse Chain Co. v. Link Belt Machinery Co.Court of Appeals for the Seventh Circuit · 1908
6 more not listed; retrieve them via the Exa API.
3Cited by9 opinions
- In re KuehlCourt of Customs and Patent Appeals · 1973
- Helen Russell Pierce, of the Last Will and Testament of George Washington Pierce, Deceased v. Allen B. Du Mont Laboratories, IncCourt of Appeals for the Third Circuit · 1961
- In Re CopemanCourt of Customs and Patent Appeals · 1943
- In re WardCourt of Customs and Patent Appeals · 1956
- In Re SaundersCourt of Customs and Patent Appeals · 1946
4 more not listed; retrieve them via the Exa API.