How can I find glass cutting patents?
<p>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:</p>
<pre><code>63,795 / “Exotic Flower” / William P. Moran / 18 Jan 1923 / 15 Jan 1924
</code></pre>
<p>However, U.S. patent 63795 does not correspond to this patent.</p>

<p>The reason why I could not find the patent is that there are several different kinds of patents. Mechanical patents, for example, are &quot;utility&quot; 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 &quot;D&quot; is inserted before the patent number, like &quot;D63795&quot;. This results in the correct patent being discovered:</p>
<p><a href="https://i.stack.imgur.com/g9K8R.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/g9K8R.png" alt="enter image description here" /></a></p>

patents