Piet Kalkman

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Waddinxveen, NL

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Patents Grantslast 30 patents

Information Patent Grant
Tensioner
- Patent number 6,439,445
- Issue date Aug 27, 2002
- Itrec B.V.
- Anne Klaas De Groot
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Transport vehicle for large, heavy loads
- Patent number 6,024,184
- Issue date Feb 15, 2000
- Itrec B.V.
- Piet Kalkman
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Method and installation for laying a pipeline on a surface located...
- Patent number 5,823,712
- Issue date Oct 20, 1998
- Allseas Group S.A.
- Piet Kalkman
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT