Online source for pre-WWII Japan patents?
October 15, 2024 9:28 PM Subscribe
While https://www.j-platpat.inpit.go.jp is a well organized database for recent Japan patents, I am searching for several patents from the 1930's. This article details a method to determine the year from a patent number, but then falls back to snail-mail enquiries for more info. Does anyone know of a more recent online resource for older Japan patents?
« Older Do I want to move to Calgary, Canada? | Do you always respond to after-purchase or... Newer »
You are not logged in, either login or create an account to post comments