Ricerca semantica

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  • Patent n° US-214795, of 1879-04-29, requested on 1879-02-06, of William W. Stewart, Swan. Improvement in fountain-pen holder.
  • Patent n° US-293545, of 1884-02-12, requested on 1883-09-19, of Lewis E. Waterman, Waterman. Fountain-pen.
  • Patent n° US-307735, of 1884-11-04, requested on 1883-06-20, of Lewis E. Waterman, Waterman. Fountain-pen.
  • Patent n° US-311554, of 1885-02-03, requested on 1884-06-26, of Paul E. Wirt, Wirt. Fountain-pen.
  • Patent n° US-314547, of 1885-03-24, requested on 1884-06-30, of William W. Stewart, Swan. Fountain-pen.
  • Patent n° US-330358, of 1885-11-10, requested on 1885-03-02, of Paul E. Wirt, Wirt. Fountain-pen.
  • Patent n° US-345411, of 1886-07-13, requested on 1886-03-18, of Francis C. Brown, Caw's. Fountain-pen.
  • Patent n° US-353053, of 1886-11-23, requested on 1886-04-20, of Dewitt C. Demarest, Eagle. Fountain-pen.
  • Patent n° US-353399, of 1886-11-30, requested on 1886-08-18, of Francis C. Brown, David W. Beaumel, Caw's. Fountain-pen.
  • Patent n° US-358525, of 1887-03-01, requested on 1886-07-28, of Paul E. Wirt, Wirt. Fountain-pen.
  • Patent n° US-361493, of 1887-04-19, requested on 1886-11-06, of Dewitt C. Demarest, Eagle. Fountain-pen.
  • Patent n° US-374140, of 1887-11-29, requested on 1887-04-15, of Francis C. Brown, Caw's. Fountain-pen.
  • Patent n° US-378987, of 1888-03-06, requested on 1887-04-27, of William W. Stewart, Swan. Fountain-pen.
  • Patent n° US-408000, of 1889-06-30, requested on 1888-11-23, of Dewitt C. Demarest, Eagle. Fountain-pen.
  • Patent n° US-422474, of 1890-03-04, requested on 1889-09-27, of Otto E. Weidlich, Weidlich. Fountain-pen.
  • Patent n° US-426692, of 1890-04-29, requested on 1889-09-20, of William W. Stewart, Swan. Fountain-pen.