Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 397,618
Pipe Wrench
John H. Vinton - Boston, MA

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches

Trimont Manufacturing Company - Portland, ME

Trimont Mfg. Co. - Portland, ME
Trimont Mfg. Co. - Roxbury, MA

Bernice J. Noyes
Fredk. L. Emery

Patent Dates:
Applied: Aug. 06, 1888
Granted: Feb. 12, 1889

Patent Pictures: [ 1 | 2 ]
John H. Vinton patent Febr. 12, 1889
USPTO pdf tiff
Google Patents
Report data errors or omissions
1889 TRIMO pipe wrench (FLICKR)
Patent covers the thread form on the adjusting knurl and movable jaw, the adjusting knurl for a pipe wrench and the frame holding the knurl. The earliest ads for the TRIMO pipe wrench show a construction like this patent. Extant early TRIMO pipe wrenches show features from this patent together with some from with utility patent no. 414,663 and design patent no. D19,168.

Copyright © 2002-2018 - DATAMP