Best 19thc
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Almon Strowger developed the first practical telephone-switch system in the late 19th century. His invention automated call routing, dramatically reducing labor costs and improving telephone network efficiency. Primarily designed for business and early telecommunications companies, his work laid the...
Herbert H. Dow was a 19th-century American chemist and inventor. He pioneered an industrial method for extracting bromine from underground brines using electrolysis. This innovation dramatically increased bromine availability and formed the basis of his successful chemical company, The Dow Chemical...
William Seward Burroughs was an American inventor who patented the first practical mechanical adding machine with a built-in printer in 1888. Before his invention, banking and accounting calculations were performed manually, leading to frequent errors. Burroughs founded the American Arithmometer Com...
Milton Bradley (1836–1911) was an American lithographer and game manufacturer who founded the Milton Bradley Company in Springfield, Massachusetts, in 1860. That year he published The Checkered Game of Life, a board game played on a modified checkerboard that incorporated moral and developmental the...
Alexander Miles was an African American inventor awarded U.S. Patent 371,207 on October 11, 1887, for an improved elevator door mechanism. His invention automated the process of opening and closing elevator shaft doors, addressing a significant safety problem in early elevator systems where passenge...
