May 20th, 1873
Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets. event on May 20, 1873. Read about how to open files in Open File Database.
Events around May 20, 1873
| May 21st, 1873 | Birth | Hans Berger, German neuroscientist (died in 1941) |
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