https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=24893&pn=2,361,607 Plier Wrench Patentee: Charles D. Daniels - Mountainair NM Granted:1944-10-31

Lifting the swinging handle frees the jaws to slide in relation to each other. Gear teeth on the lever handle tighten the grip. Produced as the Power Grip, at Mountainair, New Mexico. Known examples are marked "Patent Pending" or "PAT'D." One KNOWN example marked "POWERGRIP WRENCH CO. / SHAWNEE OKLA" reflects a company founded in 1935, and may reflect an earlier stage in evolution of the tool. Examples shown in picture no. 709 in "Antique and Unusual Wrenches," by Schulzes show handle variations matching other examples marked "Pat Pend."
This is one of 84,582 patents currently in the database at datamp.org

]]>