Thirteen patents, including two design patents, were awarded Utah inventors by the United States Patent Office. Included are a computer graphics windowing system and a method of producing sponge metal.

Kelly Ragsdale, Salt Lake City. A swimming pool anchor and removal tool. Assigned to Cover-Pools Inc, aUtah corporation, Salt Lake City. Filed July 7, 1989. Patent 4,953,269.Craig D. Galloway, 3509 West 5175 South, Roy 84067. A masonry structure system. Filed May 15, 1989. Patent 4,953,332.

Bob Joos, 760 E. 12000 S., Draper 84020. A method of laying tiles to maintain uniform spacing between rows and columns. Filed Aug. 14, 1989. Patent 4,953,341.

Don Patterson, 4298 Shirley Lane, Salt Lake City 84121. A self draining valve member for use in underground water lines. Filed Aug. 14, 1989. Patent 4,953,581.

Oleg Kotlyar, Salt Lake City. A mud pulse valve for sharper rise and fall times, faster data pulse rates and longer lifetime. Assigned to Eastman Christensen Co., Salt Lake City. Filed May 10, 1989, a continuation of application July 27, 1987. Patent 4,953,595.

Paul M. Jessop and David H. Jeffs, both of Salt Lake City. Medical fail-safe releasible locks and/or seals for capped disposable centrifuge containers, cryogenic vials and the like. Assigned to Multi-Technology Inc., Midvale. Filed July 24, 1989, a continuation of Patent 4,874,102 (1988). Patent 4,953,741.

Patrick A. Shea, 736 NE. Capital Blvd., Salt Lake City. A coupon organizer. Filed Oct. 30, 1989. Patent 4,954,003.

Hani A.M. Abodishish, Randy W. Wahlquist, both of Ogden, and Dale A. Lopez, South Weber. Production of sponge metal from sponge metal fines. Assigned to Westinghouse Electric Corp., Pittsburgh, Pa. Filed Nov. 17, 1989. Patent 4,954,166.

Gary H. Krauth, Jordan. Indirect colorimetric detection of an analyte in a sample using ratio of light signals. Assigned to Becton, Dickinson and Co., Franklin Lakes, N.J. Filed Jan. 12, 1987. Patent 4,954,435.

Carl F. Brotherson, Millville, and Willard R.W. Knoespel, Green Bay, Wis. Method for controlling the concurrent growth of two or more lactic acid producing bacteria. Assigned to Miles Laboratories Inc., Madison, Wis. Filed Aug. 17, 1987. Patent 4,954,450.

Gary S. Watkins, Salt Lake City. Computer graphics windowing system for the display of multiple dynamic images. Assigned to Evans & Sutherland Computer Corp., Salt Lake City. Filed Oct. 11, 1988, a continuation of application May 16, 1985. Patent 4,954,819.

Larry J. Martinez, 3714 S. 4565 W., West Valley City, 84120. Shoe carousel. Filed May 5, 1987. Design patent 310,310.

Darrin D. Allred, Star Route #2, Box 67, Altonah 84002. Lens cover for recessed areas of the dashboard instrument panel. Filed July 31, 1987. Design patent 310,346.

Copies of patents are available by number for $1.50 from Box 9, Patent and Trademark Office, Washington D.C. 20231.