Pell City, Alabama
United States
3
2022-04-14
The entities that hold a legal rights for patent applications filed by inventor Johnson David:
David Johnson from Pell City, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Fluid Coupling with Partially Curved Impeller Vanes
#2 | 2020-03-12Continuous variable speed transmission using variable coupling arrangement
#3 | 2019-06-13Continuous variable speed transmission using variable coupling arrangement
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