Howson and Sons
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The firm was founded in 1853 by Henry Howson, at Forst Place, South 4th Street, Philadelphia. Other members of the family joined the firm and it became known as Howson and Sons. Now called Howson & Howson, the firm boasts to this day of procuring Patent US-1897-621195 for Ferdinand von Zeppelin.[1]
Howson & Sons appears in the 1883 Roster of registered U.S. patent attorneys (p. 22) at 119 South Fourth st., Philadelphia.
Patents for which Henry Howson was the patent agent
- Patent US-1862-35219 (Inventors: Aaron B. Cooley, English title: Adjustable reversible propeller)
- Patent US-1862-35795 (Inventors: Robert Weir, English title: Improvement in projectiles)
Patents for which Howson and Howson was the patent agent
- Patent US-1897-621195 (Inventors: Ferdinand Graf Zeppelin, English title: Navigable balloon, Supplementary to patent: Patent DE-1895-98580)
- Patent US-1901-710266 (Inventors: Theodor Gibon, English title: Aeroplane)
- Patent US-1902-730107 (Inventors: Theodor Gibon, English title: Aeroplane)
Patents for which Howson and Sons was the patent agent
- Patent US-1885-350303 (Inventors: Augustin Henri Hamon, English title: Dirigible aerostat)
