Bausch & Lomb Optical Co., Pat. Oct. 3, 1876

Serial No. 2188

The Physicians model microscope, c. 1883

Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physicians model microscope, c. 1883

Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physicians model microscope, c. 1883

Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physicians model microscope, c. 1883

Bausch & Lomb Optical Co., Pat. Oct. 3, 1876. Serial No. 2188. The Physicians model microscope, c. 1883 in case

 

Gundlach microscope patent us182919

Gundlach patent Oct. 3, 1876

The glass stage and slide holder are desribed in Gundlach patent Dec. 25, 1877

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