how come that nobody patent the invention of the hamburger?

I mean everybody can make hamburgers or make sneakers i mean nobody took the rights to be the only person to do it, they just make another brand of the same product. What do you think? I was wondering how was that possible. What do you think?

Answer #1

The use of patents was started in the 15th century … the first hamburger was introduced as far back as the 12th century.

That aside, patents do expire, marking the item for free use.

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