Volume 1: Patents

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Joseph Farmer
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Joined: Sun Jul 06, 2014 8:03 pm

Volume 1: Patents

Post by Joseph Farmer » Wed Dec 03, 2014 11:00 pm

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Farmer's Notes, Volume 1: Patents
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(Complete December 2014. Then fallow waiting for rest)
  • 1790-1921: Pretty much complete coverage.
    1921-1945: Good coverage.
    1945-1960: Scanty coverage.
    1960-1980: Very limited coverage.
    1980-now: No coverage.
2020 or thereabouts.

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