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Generation 6

Alligator Jaw Wrenches

Dual Wrenches

A Timeline of the


Adjustable Wrench


It began with J. P. Johansson's patent,

No. 4066 from 11 May 1892, for the adjustable wrench

 with one fixed and one variable jaw.


This was the type of wrench that is still produced today.

This information was obtained from the from the J.P. Bladet,

the newsletter of the J.P. Johansson Sällskapet

and translated using the Google translator.