Harold M. Zimmermann

5 Patents

• USD11239012026

  Modular Speaker System

  COASTAL SOURCE, LLC

  0 cites
• USD10708142025

  Modular Speaker System

  COASTAL SOURCE, LLC

  0 cites
• USD10345282024

  Speaker

  COASTAL SOURCE, LLC

  0 cites
• US119173592024

  Fir Cable Loop Speakers System

  COASTAL SOURCE, LLC

  0 cites
• USD10089992023

  Pyramid Speaker

  COASTAL SOURCE, LLC

  0 cites