Working on the entries for the two patents in the last update caused me to poke around again to make sure I had all the relevant patents for the Inverto tools. I think I have all of the patents for the tools themselves, but there is one more for the No. 540/540R/540S Jeweling Attachment. And here it is... |
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The patent information stamped into the base of the Inverto 17 above reminded me that this site was missing two of K&D's earliest Inverto patents.
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AuthorHi, I'm Tom and I have a staking set acquisition problem... Archives
May 2016
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