J. Walter Douglass
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American patent agent J. Walter Douglass was recorded as being at address 914 Walnut Street, Philadelphia; and 615 Seventh Street, Washington DC; with registration number 150.[1]
Douglass was the agent for Patent US-1898-607240 and also one of two witnesses, for what its worth.
Patents for which J. Walter Douglass was the patent agent
- Patent US-1895-535172 (Inventors: Charles R. Purnell, English title: Screw-Propeller)
- Patent US-1898-607240 (Inventors: Charles E. Hite, English title: Airship, Applicant firm: Hite Manufacturing and Navigation Company)
References
- ↑ 1899 Roster of registered U.S. patent attorneys, p. 24.
