Ricerca semantica

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  • Patent n° US-803866, of 1905-11-07, requested on 1904-12-06, of William A. Welty, Welty. Fountain-pen feed.
  • Patent n° US-810284, of 1905-12-12, requested on 1905-03-20, of Frank M. Kegrize, Kegrize. Fountain-pen.
  • Patent n° US-819719, of 1906-05-08, requested on 1905-07-07, of Francis C. Brown, Caw's. Fountain-pen.
  • Patent n° US-834541, of 1906-10-30, requested on 1906-01-18, of William A. Welty, Welty. Fountain pen.
  • Patent n° US-844575, of 1907-02-19, requested on 1905-12-11, of John S. Barnes, Waterman. Fountain-pen.
  • Patent n° US-844576, of 1907-02-19, requested on 1906-04-10, of John S. Barnes, Waterman. Fountain-pen.
  • Patent n° US-848620, of 1907-04-02, requested on 1905-12-18, of John S. Barnes, Waterman. Fountain-pen.
  • Patent n° US-900833, of 1908-10-13, requested on 1906-08-21, of Alonzo T. Cross, Cross. Fountain-pen.
  • Patent n° US-940509, of 1909-11-16, requested on 1908-11-28, of Duncan Cameron, Cameron. Fountain pen nib.
  • Patent n° US-978420, of 1910-12-13, requested on 1908-10-31, of Paul E. Wirt, Wirt. Fountain-pen.