JG

Jean Louis Gratzmuller

Overall (All Time): #2,368,886 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4296910 Hydraulically controlled safety valve — 1981-10-27
4243856 Piston-type hydropneumatic accumulator equipped with a gas shortage detection device — 1981-01-06