Siebolt Hettinga

📍 Des Moines, IA: #5 of 33 inventorsTop 20%

🗺 Iowa: #61 of 653 inventorsTop 10%

Overall (1997): #23,923 of 185,788Top 15%

Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5665405	Self-contained molding apparatus and method for clamping the mold unit of an injection mold apparatus	—	1997-09-09
5618487	Multi-clamp mold and method for clamping an injection mold assembly	—	1997-04-08