Norwegian blades

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From Jos ter Laak, NGUp Engineering BV, Delden, The Netherlands

You report the market entrance of Umoe Ryving as a blade manufacturer ("Norwegian blades," December 2002) and state that, "the blades are being made (...) from a mould tool acquired from the bankrupt estate of former Dutch blade company Aerpac."

This is, in fact, not true. We, NGUp Engineering BV, have provided Umoe with the blade design, the design and manufacture of the production line and the start-up of the production; the latter is an activity which is still going on. The mould, just as the whole production line, is thus a brand new one. We do consist, however, of former employees of Aerpac Engineering and the design and production line delivered to Umoe are based on Aerpac technology.

Besides making new designs, we also have the option to market the Intellectual Property Rights (IPR) of former Aerpac on a worldwide and exclusive basis. These IPR are in the possession of the administrator of the bankruptcy and consist of blade designs and production technologies.

Furthermore, we provide services for the optimisation and/or operation of existing wind farms and we have developed a small wind turbine for installation on buildings (a so called "urban wind turbine") of which the prototype is now being tested. The first production turbine will be installed in late April. A sister company provides blade maintenance and repair, both in the field and in our own workshop.

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