Johannes B. Ratelband

📍 Oosterbeek, NL: #8 of 67 inventorsTop 15%

Overall (All Time): #1,660,383 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5090660	Diaphragm valve comprising a sleeve-shaped elastic diaphragm	—	1992-02-25
5020513	Screen adapted to be placed in front of a hearth fire or other source of radiant heat	—	1991-06-04
4616628	Fire-guard	—	1986-10-14