David H. Ritter

4 Patents

• US123852412025

  Drain System for Bathtub

  KOHLER Co.

  0 cites
• US119823622024

  Faucet with Improved Valve

  KOHLER Co.

  0 cites
• US117253732023

  Drain System for Bathtub

  KOHLER Co.

  0 cites
• US115609572023

  Faucet with Improved Valve

  KOHLER Co.

  0 cites