Lewis, William H. patent graphoscope

Region: United States    Period: 1850–1890    Tag: Lewis

The graphoscope patent of William H. Lewis describes a compact graphoscope with stereo lenses that folds completely into a wooden box.

Related items: Lewis family

Patents and registrations:

Number: 183579
Graphoscope
Filing: 24-10-1876, Applicant(s): William H. Lewis. via: worldwide.espacenet.com