John Demanczyk, Jr.

📍 Elsmere, DE: #1 of 3 inventorsTop 35%

🗺 Delaware: #3,234 of 7,163 inventorsTop 50%

Overall (All Time): #2,327,996 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D299404	Modified crab mallet	—	1989-01-17
D297696	Crab mallet	—	1988-09-20