Abijah McCall

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Abijah McCall was a co-inventor of the Fresno Scraper, a horse-drawn (and later, tractor-drawn) earth-moving machine upon which modern road- and canal-building equipment is based. Along with his partner Frank Dusy, McCall devised an improvement on the Buck Scraper, invented by James Porteous. On June 15, 1885, McCall and Dusy received U.S. Patent 320,055 for their version of the scraper. Porteous purchased the patents held by Dusy and McCall and also a patent held by William Deidrick as he perfected the scraper, which Porteous also manufactured at his factory in Fresno, California. The scraper was widely used in the Western United States and also put into use by U.S. engineers building the Panama Canal. Deidrick, Dusy, and McCall were all early residents of Selma, California, where McCall Avenue is named for McCall. McCall reputedly used a Fresno Scraper in building the road which runs through Selma and north to Clovis, California.

Frank Dusy was an early business leader of Selma, California and a co-inventor of the Fresno Scraper, the basis of most modern earth-moving machinery. On June 16, 1885, Dusy and his partner Abijah McCall were issued U.S. Patent 320,055, for their improvement on the Buck Scraper, invented by James Porteous of Fresno, California. Porteous, originally a wagon builder, purchased their patent and one held by William Deidrick as he perfected his machine. Dusy was also among the original investors in the Fresno Republican newspaper, which was eventually acquired by and combined with the Fresno Bee.

James Porteous (1848–1922) was the Scottish-American inventor of the Fresno scraper.

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A patent is a form of intellectual property. A patent gives its owner the right to exclude others from making, using, selling, and importing an invention for a limited period of time, usually twenty years. The patent rights are granted in exchange for an enabling public disclosure of the invention. In most countries patent rights fall under civil law and the patent holder needs to sue someone infringing the patent in order to enforce his or her rights. In some industries patents are an essential form of competitive advantage; in others they are irrelevant.

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