Siebolt Hettinga

📍 Des Moines, IA: #3 of 36 inventorsTop 9%

🗺 Iowa: #52 of 609 inventorsTop 9%

Overall (1994): #19,667 of 165,921Top 15%

Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5336460	Process for making molded-in lamina hinge	—	1994-08-09
5275764	Method of molding a vehicle lamp assembly	—	1994-01-04