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The Franklin Manufacturing Company founded in 1884 in St Paul, MN (USA) by two entrepreneurs Frank Johnson and Oliver Crosby.
Company name is changed to American Manufacturing Co.
Company changes its name to American Hoist & Derrick
Company name changed to “Amdura”.
American mobile crane product line is purchased by group of investors forming a new company named American Crane Corporation
American Crane Corporation is acquired by Terex.
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American Manufacturing Company awarded its first patent for friction drums used in hoisting equipment.
American Manufacturing Company introduces the Crosby Clip, an ingenuous devise used for fastening wire rope which still sells by the million in 1980s.
Introduction of steam powered hoists.
Introduction of largest electric hoists available up to 15 HP.
Invention of a first mobile crane, called “Traveling Derrick”, a combination of revolving derrick and a steam hoist mounted on rail-car type wheels.
Builds largest locomotive crane for the US navy with 45 tons lifting capacity.
Designed the Railroad Ditcher, a shovel which revolutionized the Railroad industry.
American Hoist creates the first Crawler Crane.
Designed first 250 ton derrick.
Sky Horse invented.
Design of M-3000, the first ship-mounted revolver crane with lifting capacity of 3,000 tons.
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