Designed the Ticka detective camera in 1904. Patented in the US on 6 September 1904, and in England and Germany on 14 October 1904. Patented many other inventions.
Designed the Ticka detective camera in 1904. Patented in the US on 6 September 1904, and in England and Germany on 14 October 1904. Patented many other inventions.