U.S. PATENTS ACKNOWLEDGE AND EMPLOY P&S

U.S. Patents Acknowledge And Employ P&S

Here are some patents that acknowledge and employ P&S. They are dated from 1902 to 1996, and answer the criticism that no one has ever heard of it.






Here is a link to books that mention or describe the use of P&S. The books are dated: 1804, 1810, 1816, 1829, 1835, 1870, 1885, 1898, 1900, 1903, 1912, 1915, 1917, 1918, 1920, 1921, 1922, 1925, 1926, 1927, 1929, 1941.

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