Sargent v. Larned
U.S. Circuit Court for the District of Massachusetts
[This was a bill in equity by James Sargent and others against Pitts A. Lamed and others for tlu> infringement of letters patent No. 10,-078 granted to James Sargent and D. P. Foster, as assignees of Ephraim L. Pratt, October 3, 1853.)
1Opinion of the Court
CURTIS, Circuit Justice.
This is a suit in equity, founded on letters patent for “a new and useful improvement in machines for paring apples,” granted to the complainants as the assignees of Ephraim L. Pratt, and bearing date October 4, 1853. The counsel for the complainants insisted, that the respondent Sea-grave is estopped by his covenant, which will *502hereafter be referred to, from disputing the validity of the patent; but the question to which most of the evidence, and the arguments of the counsel at the hearing, were directed, was whether Pratt was the original and first inventor of the…
2Cases cited1 opinion
- Winans v. DenmeadSupreme Court of the United States · 1854
3Cited by4 opinions
- Beach v. American Box-Machine Co.U.S. Circuit Court for the District of Northern New York · 1894
- Mann's Boudoir Car Co. v. Monarch Parlor Sleeping Car Co.U.S. Circuit Court for the District of Southern New York · 1888
- Mudgett v. ThomasU.S. Circuit Court for the District of Southern Ohio · 1893
- P. P. Mast & Co. v. Rude Bros. Manuf'g Co.Court of Appeals for the Seventh Circuit · 1892