DATAMP = Directory of American Tool and Machinery Patents

If you are looking for the patent associated with an antique tool, head over to It’s quite possible you’ll be able to find the tool patent you are looking for among the 70,000 or so patents there. I’m a developer of the site and one of the data stewards that enters patent data so I highly recommend the site!

Here’s the most recent patent that was entered into datamp:

  • US Patent: 38,520US Patent: 38,520
    Improvement in tools for cutting and beveling barrel-heads Patentee: William Watkins - Crete IL Granted:1863-05-12 This plane "planes and bevels the edge of barrel heads". An example was sold by Martin Donnelly in 2016. This is one of 71,784 patents currently in the database at

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