Patent of a straight and curved objects: the paperclip
The modern paper clip was patented on November 9, 1899 to William D. Middlebrook of Waterbury, Connecticut. Middlebrook invented not just the paper clip but he also invented a machine to produce the paper clip.
Cushman and Denison purchased the Middlebrook patent in 1899. That same year Cushman and Denison also trademarked the name "GEM" for their new paper clip.
Definition: paper clip, gem clip, paperclip Function: A paper clip is a device which holds several sheets of paper together
Pressure: it leaves the paper intact and can be easily removed. Patent: 636,272 (US) issued November 7, 1899 Inventor: William D. Middlebrook Criteria: First practical. Modern prototype Nationality: American
1867 Samuel Fay invents and patents a Ticket Fastener that also can be used to hold paper 1899 William D. Middlebrook invents and patents paper clip and the production machine 1899 Middlebrook sells patent to Cushman & Denison 1899 Cushman & Denison trademark the name GEM for their paper clip 1901 Johan Vaaler patents paper clip 1903 George McGill patents a paper clip that looks very similar to today's version