Patent drawing

Middlebrook paperclip machine patent, 1899

A patent drawing is a technical drawing of an patent invention, that shows the nature of the invention. The drawing must show every feature of the invention specified in the claims, and is required by the patent office rules to be in a particular form.

18th century patent drawings

19th century patent drawings

First half of 19th century

1850s

1860s

1870s

1880s

1890s

20th century patent drawings

1900s

1910s

1920s

1930s

1940s

1950s

1960s

1970s

1980s

1990s

21st century patent drawings

Other

See also

Category:Patent drawings Category:Galleries initiated by User:Mdd
Category:Galleries initiated by User:Mdd Category:Patent drawings