Bartele van der Werff

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Medemblik, NL

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Patents Grantslast 30 patents

Information Patent Grant
Hopper barge having a bottom discharge opening closable by hopper d...
- Patent number 4,120,409
- Issue date Oct 17, 1978
- A. Vuyk & Zonen's Scheepswerven B.V.
- Bartele vander Werff
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Hopper barge having a bottom discharge opening closed by hopper doors
- Patent number 4,104,979
- Issue date Aug 8, 1978
- A. Vuyk & Zonen's Scheepswerven B.V.
- Bartele van der Werff
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Bottom-dump vessel
- Patent number 3,946,686
- Issue date Mar 30, 1976
- A. Vuyk & Zonen's Scheepswerven B.V.
- Bartele van der Werff
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT