Chapman v. Wintroath
Supreme Court of the United States
CERTIORARI TO THE COURT OF APPEALS OF THE DISTRICT OF COLUMBIA. The case is stated in the opinion.
1Opinion of the CourtJustice Clarice
In 1909 Mathew T. Chapman and Mark C. Chapman filed an application for a patent on an “improvement in d,eep well pumps.” The mechanism involved was complicated, the specification intricate and. long, and the claims numbered thirty-four. The application met with unusual difficulties in the Patent Office, and, although it had been regularly prosecuted, as required by law and the rules of the Office, it was still pending without having been passed to patent in 1915, when the controversy in this case arose.
In 1912 John A. Wintroath filed an application for a patent on “new and useful improvements…
2Cases cited4 opinions
- Mahn v. HarwoodSupreme Court of the United States · 1884
- United States v. American Bell Telephone Co.Supreme Court of the United States · 1897
- Smith & Griggs Manufacturing Co. v. SpragueSupreme Court of the United States · 1887
- Wollensak v. ReiherSupreme Court of the United States · 1885
3Cited by102 opinions
- Hartford-Empire Co. v. United StatesSupreme Court of the United States · 1945
- Alexander Milburn Co. v. Davis-Bournonville Co.Supreme Court of the United States · 1926
- Webster Electric Co. v. Splitdorf Electrical Co.Supreme Court of the United States · 1924
- Dwight & Lloyd Sintering Co. v. GreenawaltCourt of Appeals for the Second Circuit · 1928
- Carson v. American Smelting & Refining Co.Court of Appeals for the Ninth Circuit · 1925
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