Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 413,940
Pipe Wrench
John T. Hawkins - Taunton, MA

USPTO Classifications:
81/175, 81/179, 81/186

Tool Categories:
wrenches : alligator wrenches
wrenches : pipe wrenches


Not known to have been produced

Francis P. Reilly
Alfred S. Brown
F. H. Davies

Patent Dates:
Applied: Apr. 29, 1889
Granted: Oct. 29, 1889

Patent Pictures:
John T. Hawkins patent October 29, 1889
USPTO pdf tiff
Google Patents
Report data errors or omissions
An improved full width adjustable stop for the smooth jaw of an "alligator wrench" -- although not noted in the specifications, the wrench in question is patent no. 404,619.

British patent GB-188909296 (registered June 4, 1889) and Canadian patent CA-34,269 (granted May 7, 1890) combine features of both patents into one set of claims.

Copyright © 2002-2020 - DATAMP