Turn of the Century Computing Patents for Improvements in "Calculating Machines", 1900-1904
[Engineering][Invention and Business] Felt, Dorr Eugene. British Patents for Improvements in Calculating Machines (1900–1904) document the development of one of the earliest commercially successful key-driven mechanical calculators, reflecting the rapid mechanization of clerical labor at the turn of the twentieth century. These patents relate to the Comptometer, first introduced in.....








