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BR 27


New Jersey, USA

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  • "It appears that both the HORL and the Tumbler are based off of a design from 1949 which always patented and whose patent expired in 1966.The way the Tumbler looks compared to the HORL, may be the claim of “copycat”,  but both appear to be using an expired patent.Take a look: https://patents.google.com/patent/US2475110A/enSomeone please correct me if I’m wrong."
    on: UPDATE: The Tumbler Knife Sharpener is a Knock-Off
  • "https://patents.google.com/patent/US2475110A/en"
    on: UPDATE: The Tumbler Knife Sharpener is a Knock-Off
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