This logo and serial number are engraved on the body tube. The number shows that the microscope was made in the Summer of 1914.
This Bausch & Lomb logo is engraved on a brass plate attached to the top of the body. It indicates that Bausch & Lomb (Rochester, NY, USA) sold the microscope.
Carl Zeiss, Jena made the "Revolving and Centring (sic) Vulcanite Stage"
An older objective has this script Zeiss logo
The single eyepiece body was made by Carl Zeiss, Jena and distributed by Bausch & Lomb