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| Patents for B63H 9 - Propulsive devices directly acted on by wind; Arrangements thereof (3,312) |
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| 09/07/1976 | US3978809 Roller traveller device | | 08/17/1976 | US3974791 Sails and method of manufacture | | 07/13/1976 | US3968765 Rotatable-mounting apparatus for sails | | 06/22/1976 | US3964419 Anti-fouling roller furling gear upper assembly | | 05/25/1976 | US3958523 Sail hoisting, supporting and furling apparatus | | 05/04/1976 | US3954076 Reinforcing patch for sails and method of making same | | 04/06/1976 | US3948200 Jib sail system | | 02/17/1976 | US3938460 Sail-raising system | | 02/17/1976 | US3938458 Adjustable boat hull | | 02/03/1976 | US3935619 Grumment for sail cloth | | 01/27/1976 | US3934533 Aerofoil or hydrofoil | | 01/13/1976 | US3931779 Sailing boat |
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