PB

Per Boen

Overall (All Time): #1,659,171 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D342567 Gasket for corrugated pipes — 1993-12-21
5252049 Lubricating arrangement for plastic extruders — 1993-10-12
4591323 Extruder and calibrating apparatus for making ribbed or grooved pipe — 1986-05-27