How can I find glass cutting patents? Apparently they use a different numbering system than ordinary patents. For example, according to glass collectors, the following patent was registered:

63,795 / “Exotic Flower” / William P. Moran / 18 Jan 1923 / 15 Jan 1924

However, U.S. patent 63795 does not correspond to this patent.

  • 1
  • @RodrigodeAzevedo Try it before recommending it. Type in US63795 and see if the patent I listed above appears. – Cicero Sep 22 '20 at 12:17
  • US Patent 63795 is a table knife, so I'm guessing the reference you found, which I'm guessing is from this page is not valid. Furthermore, there are no patents by William P Moran (well, there are, but they are from the 1990's). When doing patent searches, I find that patents.google.com is a good resource. – Ron Beyer Sep 22 '20 at 12:32
  • 1
    Searching for one of them (16720 “Strawberry Diamond and Star”) I get exactly 3 websites, that seem to quote one another. Sure that it is a patent and not a misquote where someone took Pat as Patent instead of pattern? And sure it is even a US patent? I am quite sure that you can't patent a non functional pattern... – Trish Sep 22 '20 at 13:22
  • 1
    @Cicero Where, exactly, did you come up with that (mistaken) idea? – CGCampbell Sep 22 '20 at 15:11

The reason why I could not find the patent is that there are several different kinds of patents. Mechanical patents, for example, are "utility" patents. The cut glass pattern referenced in the question is not a utility patent, it is a design patent. Each patent type has its own numbering system. To search for a design patent, typically a "D" is inserted before the patent number, like "D63795". This results in the correct patent being discovered:

enter image description here

  • So, it's a misquote - missing the D – Trish Sep 22 '20 at 16:55
  • In the U.S. their are only three kinds of patents. Utility, Design and Plant. – George White Sep 22 '20 at 17:43
  • @Trish The glass collectors assume that the reader is experienced enough to know that a design patent is being referenced. I did not have that experience and obviously neither did you. – Cicero Sep 22 '20 at 18:23
  • @GeorgeWhite That's my goal in life: to patent a plant. – Cicero Sep 22 '20 at 23:36

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.