On Sun, Jun 6, 2021 at 8:12 PM Christian Gagneraud  wrote:

>
> >
> > https://www.bl.uk/help/find-early-british-patents
> > They say that starting from 1852, patent numbers refer to a specific
> > year (so you need to know the year and the patent number).
> > So higest patent number by the end of 1852 is 14359.
> >
> > Year 1892 is the first year to have more than 22k patents applied for.
> > So patent No 22017 seems to have been emitted after 1892...
> > Confusing and no possibility to do online research. :(
> > I filled a request form, let's see how lucky I'll be.
>
> Wowhooo! I found it with a bit of perseverance:
>
> https://worldwide.espacenet.com/patent/search/family/032142871/publication/GB1
89822017A?q=nftxt%20%3D%20%22rabone%22%20AND%20pd%20%3C%3D%20%221900%22
>
> GB189822017 is Patent 22017 of year 1898:
> Improvements in the Manufacture of Spirit Levels
> Rabone, H. J.
>
>
> https://worldwide.espacenet.com/3.2/rest-
services/images/documents/GB/189822017/A/formats/pdf/pages/?EPO-Trace-Id=8ypvgy-
9je6o6-XXX-000239
>
> Chris
>

Knowing what you know now, google patents will reveal it too.

https://patents.google.com/patent/GB189822017A/en?oq=GB189822017

Just brute forcing GB18xx22017 would be the hard way.  (xx=92, 93, 94.....
ad nauseam)

I put the 22017 into espace, and it returned 22 patents, but none had the
prepend of the year.

Nice work.  I didn't try to search espacenet for patent holder.

Kirk in Half Moon Bay, CA, suffering through more online meetings.