Toto is way ahead of you; their patents has already been issued *and* expired: h... | Hacker News

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icebraining on April 7, 2014 | parent | context | favorite | on: Ask HN: Idea Sunday

Toto is way ahead of you; their patents has already been issued and expired: https://www.google.com/patents/US5111539?pg=PA25&dq=5111539&...

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