Paul C. Symmons

SI Symmons Industries: 3 patents #3 of 16Top 20%

📍 Wellesley, MA: #360 of 837 inventorsTop 45%

🗺 Massachusetts: #33,482 of 88,656 inventorsTop 40%

Overall (All Time): #1,667,465 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4917137	Pressure-balancing mixing valve	—	1990-04-17
4457452	Automatic shut-off valve	—	1984-07-03
4453569	Check valve with inspection means	—	1984-06-12