Hubert got interested in an electrical device for lighting natural gas equipment in the later part of the 1890s.
He obtained this patent (No.
617,592) from David Misell, which came with an "electric device" that resembles the flashlight.
Hubert got interested in an electrical device for lighting natural gas equipment in the later part of the 1890s. He obtained this patent (No. 617,592) from David Misell, which came with an "electric device" that resembles the flashlight.
Conrad Hubert