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High Court Wellington
7–10, 20–23 March; 3 April 1939
Blair J
7–10, 20–23 March; 3 April 1939
Blair J
Patent — Infringement — Specification — Device for use in Milking-machine — Description — Non-definition of Extent of Buoyancy of "Float" — Whether Patent thereby invalidated by Proof of Manufacture and Sale without Proof of Installation of Milking-machine — Whether Infringement established.