Johannes B. Ratelband

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6811 LV Arnhem, NL

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Patents Grantslast 30 patents

Information Patent Grant
Screen adapted to be placed in front of a hearth fire or other sour...
- Patent number 5,020,513
- Issue date Jun 4, 1991
- Johannes B. Ratelband
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Fire-guard
- Patent number 4,616,628
- Issue date Oct 14, 1986
- Johannes B. Ratelband
- F24 - HEATING RANGES VENTILATING