David Johnson

📍 San Francisco, CA: #163 of 582 inventorsTop 30%

🗺 California: #4,598 of 17,285 inventorsTop 30%

Overall (1997): #163,082 of 185,788Top 90%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5642537	Portable patient transfer board	—	1997-07-01