United States Patent: 3716156 - Dave's Blog

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United States Patent: 3716156

2007 Dec 5, 1:43Found my grandfather's patent: Donald Risney, February 13, 1973, BOAT TRANSPORTER. Abstract: A cross piece clamped and tied to the ends of a boat, rotatable about the short axis thereof, and longitudinally movable about the long axis thereof for liftingPermalinkCommentspatent family donald-risney boat
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