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In the Circuit Court of the United States, in and for the Southern District of New York

其他書名	Second Circuit. In Equity. C.C. Campbell, Vs. the Mayor, Aldermen, and Commonalty of the City of New York. Pleadings and Proofs
出版	Franklin Press, Rand, Avery & Company, 1881
URL	http://books.google.com.hk/books?id=Lq4OAAAAYAAJ&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋Campbell claimed that James Knibbs, engineer-in-chief of a steam fire-engine in Troy N.Y., had a patent as the original and first inventor of new and useful improvements in steam fire engine pumps, and that in 1864 Knibbs transfered the patent to Marcus P. Norton and his subsequent heirs.