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LIGHTER-THAN-AIR VEHICLE IS AMONG UTAH INVENTIONS TO RECEIVE U.S. PATENTS

SHARE LIGHTER-THAN-AIR VEHICLE IS AMONG UTAH INVENTIONS TO RECEIVE U.S. PATENTS

A lighter-than-air vehicle, a crystal resonator, and six other inventions by Utah inventors were awarded patents by the United States Patent Office.

Rollin F. Christopherson, 5756 S. Willowwood Lane, South Ogden 84403. A ball valve. Filed March 3, 1989. Patent 4,934,408.David O. Martin, Salt Lake City. Tension strut apparatus and method for an overhead garage door. Assigned to Martin Door Manufacturing Inc., Salt Lake City. Filed June 5, 1989. Patent 4,934,439.

Joseph F. Womack Jr., Ogden, and Rodney L. Griffin, Roy. A pressurized fluid injection method and means. Assigned to Westinghouse Electric Corp., Pittsburgh, Pa. Filed Dec. 19, 1988. Patent 4,934,569.

Steven C. Evans, North Ogden. A method of comminuting reactive metals. Assigned to Westinghouse Electric Corp., Pittsburgh, Pa. Filed Oct. 16, 1989. Patent 4,934,610.

Louis G. Birbas, St. George. A lighter-than-air type vehicle. Assigned to Ulysses Corp., St. George. Filed Jan. 9, 1989. Patent 4,934,631.

Larry Ashton, Provo; Roland J. Christensen, Fayette, and Randy L. Crane, West Jordan. Apparatus for forming hollow structures from powdered thermoplastic materials. Assigned to Fiber Technology Corp., Provo. Filed March 7, 1988, a division of application Aug. 16, 1984. Patent 4,934,917.

Errol P. EerNisse, Salt Lake City; Roger W. Ward, Park City, and O. Lew Wood, Murray. A crystal resonator with low acceleration sensitivity and method of manufacture. Assigned to Quartztronics Inc., Salt Lake City. Filed July 13, 1988, a continuation-in-part of Patent 4,837,475. Patent 4,935,658.

Dal Gordon, 11025 S. 1700 West, South Jordan 84065, was awarded a design patent (308,614) for a protective cushion attachment for a shopping cart seat. Filed April 6, 1987.

Copies of patents may be obtained for $1.50 from Box 9, Patent and Trademark Office, Washington DC 20231.