Application for a Patent for Frank Sleeper
Year: 1886
Credits: Beaulne Museum
Patent awarded to Frank Sleeper on July 30th, 1886, for one of his finest inventions, registered no. 24590.
Year: 1886
Credits: Beaulne Museum
Patent awarded to Frank Sleeper on July 30th, 1886, for one of his finest inventions, registered no. 24590.