Wahl v. Main
District Court, District of Columbia
Appeal from the Commissioner of Patents. Interference proceeding between John C. Wahl and Fred F. Main. From a decision of the Commissioner of Patents, awarding priority to Main, Wahl appeals.
1Opinion of the Court
VAN ORSDHR,
Associate Justice. This appeal is from a decision of the Commissioner of Patents awarding priority of invention to ap-pellee, Main. Main filed his application November 12, 1910, üpon which a patent was issued January 2, 1912. Wahl filed his application Mav 23, 1911.
The invention relates to combined typewriting and computing machines, the object of which is to provide a computing mechanism, operable from the numeral keys, and so connected with the carriage of the typewriter, that computation may be effected as the typewriter prints in any column. It is unnecessary to consider the…
2Cases cited2 opinions
- Chapman v. WintroathSupreme Court of the United States · 1920
- Wahl v. WrightCourt of Appeals for the D.C. Circuit · 1921
3Cited by3 opinions
- Chapman v. BeedeCourt of Appeals for the D.C. Circuit · 1924
- Leonard v. EverettCourt of Appeals for the D.C. Circuit · 1922
- American Laundry Machinery Co. v. Prosperity Co.District Court, N.D. New York · 1923