Harry Howden

U.S. Philips: 2 patents #21 of 532Top 4%

📍 Smallfield, GB: #1 of 1 inventorsTop 100%

Overall (1982): #13,472 of 81,411Top 20%

Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4327606	Method of making a master replicating tool	—	1982-05-04
4319945	Method of producing aspherical optical elements	—	1982-03-16