Harold W. Pierce

📍 Ellicott City, MD: #403 of 1,185 inventorsTop 35%

🗺 Maryland: #10,129 of 35,612 inventorsTop 30%

Overall (All Time): #1,682,834 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4374514	Fireplace heater stove	—	1983-02-22
D266865	Fireplace stove	—	1982-11-09
4320741	Fireplace heater stove	—	1982-03-23