Door knob.

Author/Artist: 
Leighton, William, 1833-1911.
Publisher: 
Washington, DC: United States Patent Office, 1855.
Description: 
[2] p. : ill. ; 28 cm.
Other Authors: 
United States. Patent Office.
Format of Material: 
Documents
Bib ID: 
64765
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Location: 
Secured Stacks - Documents
Call Number: 
Patents
Notes: 
Patent.
Specification of letters patent no. 12,265, dated January 16, 1855; William Leighton, of Cambridge, Massachusetts, assignor to New England Glass Co.
CMG has photocopy only.