Jan G. H. Zijlstra

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Auckland, NZ

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Patents Grantslast 30 patents

Information Patent Grant
Wash-house fitting including a trough
- Patent number 4,186,770
- Issue date Feb 5, 1980
- Ahi Operations Limited
- Jan G. H. Zijlstra
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Water taps
- Patent number 4,141,384
- Issue date Feb 27, 1979
- Ahi Operations Limited
- Jan G. H. Zijlstra
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Drainage fittings and/or wash-house fittings
- Patent number 4,138,747
- Issue date Feb 13, 1979
- Ahi Operations Limited
- Jan G. H. Zijlstra
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...