Interesting, if slightly irrelevant: The patent lists Tony Fadell and Steve Perlman as inventors.<p><a href="https:&#x2F;&#x2F;www.google.com&#x2F;patents&#x2F;US5675811" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;patents&#x2F;US5675811</a>