David Hatmaker — 1 Patent at Yamaha

David Hatmaker has been granted 1 US patent while listed as an inventor at Yamaha. All of these patents were granted in 2021. David Hatmaker ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list David Hatmaker in Villa Park, CA, US.

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
10959020	Audio signal control circuit and audio signal control method	Mitsutaka Goto, Ken Iwayama	2021-03-23

David Hatmaker — 1 Patent

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