An improved folding opera glass.

Title: 
An improved folding opera glass.
Author/Artist: 
Bloch, Edmond.
Publisher: 
Great Britian : HMSO, 1894.
Description: 
3, 1 foldout p. : ill. ; 26 cm.
Format of Material: 
Patents
Bib ID: 
78494
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Location: 
Secured Stacks - Patents
Call Number: 
No call number available
Holdings Note: 
Currently located in Tracy's office
Notes: 
Patent no. 20,054.
Complete specification for patent application together with drawings.