John Hammerbeck

📍 Westminster, GB: #3 of 20 inventorsTop 15%

Overall (2003): #193,692 of 273,478Top 75%

Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6508733	Variable speed drive	—	2003-01-21