I recently found out my Great Grandfather was an inventor and could possibly have received a patent. I am looking for genealogical reasons. How can I find it? I would date back to the later part of the 19th century.

  • If you provide his name and where he was from, we can help you search.
    – Eric S
    Sep 28 '17 at 14:00
  • update us on this! Jan 26 '18 at 16:54
  • I have a similar situation, my great grandfather was an inventor and even had an automobile company in the early 1920's. I have found his patents on google but would like to know if they are still held by someone or expired. I have tried searching Public Pair and the links provided below but no luck. One is US1181111 A. Any help is appreciated.
    – David C
    Jan 27 '18 at 18:15

One of the most old patent collections is that of Espacenet.


Just type the name of your grandfather.

You can try the same search here:


If it's a US patent, it should be there ;)

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