Boston, Massachusetts
United States
4
2020-07-02
The entities that hold a legal rights for patent applications filed by inventor Joseph Nicholas John:
Nicholas John Joseph from Boston, US has applied for patents for these inventions. The list has both pending applications and granted patents:
ELECTRO-ACOUSTIC DRIVER HAVING COMPLIANT DIAPHRAGM WITH STIFFENING ELEMENT
#2 | 2018-07-05Electro-acoustic driver having compliant diaphragm with stiffening element
#3 | 2017-12-14Electro-acoustic driver having compliant diaphragm with stiffening element
#4 | 2016-06-23Microspeaker acoustical resistance assembly
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