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Turbosail: Plettner Rotor (Magnus effect)
INV00002_PLETTNER

Turbosail: Plettner Rotor (Magnus effect)

Electric lines
INV00003_282TENSI

Electric lines

Windmills in the middle of the Ocean along the Danish Coasts.
INV00003_236EOLIE

Windmills in the middle of the Ocean along the Dan...

A methane gas operated vehicle
INV00004_272AUTO

A methane gas operated vehicle