Baltimore, Maryland
United States
2
2023-06-29
The entities that hold a legal rights for patent applications filed by inventor Heider Christopher:
Christopher Heider from Baltimore, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Methods and apparatus to determine headphone adjustment for portable people meter listening to encoded audio streams
#2 | 2021-12-16Methods and apparatus to determine headphone adjustment for portable people meter listening to encoded audio streams
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