Bertha Butler

📍 Romulus, MI: #39 of 86 inventorsTop 50%

🗺 Michigan: #49,615 of 86,293 inventorsTop 60%

Overall (All Time): #3,900,366 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D307073	Sewing machine pin cushion	—	1990-04-10