sentences:  In 1963, John W. Dickenson began commercial production.January 10, 1963 American Domina Jalbert filed a patent US Patent 3131894 on the Parafoil which had sectioned cells in an aerofoil shape; an open leading edge and a closed trailing edge, inflated by passage through the air – the "ram-air" design.The 'Sail Wing' was developed further for recovery of NASA space capsules by David Barish.