U.S Patent Number Charts
Found a Date? Keep Treasure Hunting.
Patent numbers can tell some of the story of an old piece and help research the history of a treasure. If you enjoy vintage and collectible finds, browse through our
Current Inventory — you never know what might turn up next.
Canadian Patent Number Chart
For those hunting for northern treasures, the Canadian patent system has its own unique numbering and timeline
Just find your patent number on the item and match it to this chart, easy peasy.
UK Patent Numbers Chart
You will notice that between 1852 and 1915, the UK reset their numbering every single year on january 1st back to #1.
This is why it’s so important for collectors to have both the year and the number for the era on a UK made item—if you just have the number, it could be any of these 63 different years!
Usually those old UK pieces have the year stamped right on them (like “Pat 1894”) next to the number. if the year isn’t there, you’re basically stuck guessing by the style or maker first. The first page of this chart is mostly there to confirm if a number actually fits the year that’s stamped and that it is not a counterfeit item.
Having the right information makes the hobby of collecting even more rewarding.