Mormon Inventors

This is gleaned from an article in LDS Living entitled "Pure Genius: 14 Things You Didn't Know Mormons Invented by Jannalee Rosner and published May/June 2016.
The inventor I am most familiar with is Philo T. Farnsworth as he is from Rigby, Idaho, where my father grew up.  He had an interest in mechanical television, and came up with his own idea which he felt would improve all existing attempts, making the picture clearer.  He was able to transmit television at age 21 from his lab in San Francisco.  RCA offered to purchase his invention, and in fact treaded upon his patents.  Farnsworth later would file law suit against RCA and they would pay him a million dollars to use his design.
Many have heard the story of William Clayton and Appleton Milo Harmon and their efforts to measure distances on the Westward trek with Brigham Young.  This resulted in advances in the odometer, and their design is the father of the modern odometer.
Jonathan Browning, from Quincy, Illinois and Nauvoo, and his son John Moses Browning both made significant advances in fire arms.  Jonathan Browning worked on rifling ideas, and also a breach loading rifle.  However his son, working out of Ogden, invented many modern weapons of war, including the automatic gas-powered machine gun.  Other semiautomatic weapons are part of his list of inventions. 
Alvin McBurney was a pioneer in electric guitars.  He invented the first electric guitar, but his real love was pedal steel guitars.
Development in artificial heart was pioneered by Dr. William DeVries from University of Utah, and resulted in the first artificial heart transplant into the patient Barney Clark.  Clark lived 112 days after the surgery.  However this furthered this pioneer work.
The first modern (somewhat, it had to be manualy controlled.) traffic light was at the corner of 200 South and Main in Salt Lake City.  Although vandalized frequently, and often ignored, with improvements the traffic light has made its way into modern usage.  This was the work of police officer Lester Wire.  He neglected to patent his device, and other cities picked up on the idea.
Mormon inventors were key in developing digital sound and movies.  Thomas Stockham was a pioneer.  He was mentor to Robert B Ingebretsen, and together they received a joint Oscar for their efforts.  They are credited with pioneer the digital sound movement.  Ingebretsen with Ed Catmull made the first digital movie.
Harvey Fletcher from BYU and Provo is credited with developing the hearing aid, and other sound improvements, including stereophonic sound.  He worked with Thomas Edison.
Industrial artificial diamonds were pioneered by Howard Tracy Hall, from Ogden.
John Aldous Dixon also from Ogden, was a pioneer in using lasers in surgery.  Lasers are  now used in most surgeries to stop bleeding.
Wayne Quentin, again from Rigby, Idaho, a bioengineer, made contributions in two areas.  His work with Belding Scribner helped develop a kidney dialysis shunt, which makes it easier to reconnect to a dialysis machine.  He also developed a light-weight treadmill, which design has lead the industry and many of his are in hospitals for cardiac tests, as well as in exercise gyms. 
Gore-Tex, a light weight, waterproof fabric was developed by Robert W. Gore, from Salt Lake City.
Homer R. Warner has been a pioneer in using computers in medicine.  This has included program to diagnosis heart disease, as well as many research studies, using family history records.