Datamp.org Patents https://www.datamp.org/ Recently added patents en-us US Patent: 1,402,686 https://www.datamp.org/patents/displayPatent.php?id=28148&pn=1,402,686 Adjustable Spanner Wrench Patentee: Frank W. Trabold - Brooklyn NY Granted:1922-01-03

Adjusting worm held in position by spring structure; can be pulled away from the movable jaw to allow for quick adjustment. Fraser, Turk & Myers - patent attorneys
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