Mark Cheng

📍 San Francisco, CA: #88 of 396 inventorsTop 25%

🗺 California: #3,049 of 13,957 inventorsTop 25%

Overall (1994): #98,195 of 165,921Top 60%

Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5289700	Slidably adjustable earring post	—	1994-03-01