Search Results for: Sound reproducing using magnetic media
(class / ) direct application of electrical or wave energy to work (e.g., electromagnetic wave, particulate, magnetic, induction heat, sonic, electrostatic energy, etc.)
(class / ) measuring, testing, or inspecting (class / ) using laser sintering of particulate material to build three-dimensional product (e.g., sls, selective laser sintering, etc.)...
https://patents.justia.com/patents-by-us-classification/264