Google Patents allows you to search the US patent database … millions upon millions of useful and useless inventions.
In the latter category: anti-eating face mask
In the former: Grandpa Sweet’s patent portfolio
Gotta love googleGoogle Patents allows you to search the US patent database … millions upon millions of useful and useless inventions. In the latter category: anti-eating face mask In the former: Grandpa Sweet’s patent portfolio |
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Alicia - That’s pretty impressive stuff…