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United States patent 50617

From Wikisource
Versions of
U.S. Patent No. 50,617
by Alfred Nobel
138881U.S. Patent No. 50,617Alfred Nobel
Versions of U.S. Patent No. 50,617 include:
  • Mar 19,1872, U.S. Patent No. 50,617: Improved Substitute for Gunpowder.