Daniel H. Pierce

📍 Birmingham, MI: #20 of 71 inventorsTop 30%

🗺 Michigan: #694 of 3,452 inventorsTop 25%

Overall (1989): #122,053 of 140,708Top 90%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4879978	Poppet valve spring retainer	—	1989-11-14