Brian L. Douglass

7 Patents

• USD11254482026

  Septic Chamber

  Prinsco Inc

  0 cites
• US125843052026

  Low Profile Asymmetric Leaching Chamber for Onsite Wastewater Management System

  Prinsco, Inc.

  0 cites
• USD11111282026

  Septic Chamber Body

  Prinsce, Inc.

  0 cites
• USD10533042024

  Septic Chamber

  Prinsco, Inc.

  0 cites
• USD10366162024

  Septic Chamber

  Prinsco, Inc.

  0 cites
• US117956792023

  Asymmetric Leaching Chamber for Onsite Wastewater Management System

  Prinsco, Inc.

  0 cites
• US115486972023

  Micro-spill Prevention Trough and Method of Use

  0 cites