Donald J. DelGrande

📍 Philadelphia, PA: #1,701 of 4,834 inventorsTop 40%

🗺 Pennsylvania: #30,495 of 74,527 inventorsTop 45%

Overall (All Time): #2,369,607 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4255475	Mosaic structures	—	1981-03-10
4252847	Stained glass structure	—	1981-02-24