Yorkshire and the Humber
Stainless steel was invented in 1913 by Harry Brearley of Sheffield, working for Firth Brown Steels (now called Sheffield Forgemasters). SAE 304 stainless steel is the most common stainless steel today, invented by Dr William Herbert Hatfield FRS in 1924 at Firth-Vickers known as Staybrite 18/8, a chromium-nickel steel. Many Swiss watches were mostly made out of Staybrite.
Nick Manoloff
Nick Manoloff invented the Nick Manoloff Tone Bar. He was granted a patent (#2073331) on March 9, 1937. The tone bar or steel was made of the revolutionary synthetic material known as bakelite. Bakelite (/ˈbeɪkəlaɪt/ BAY-kə-lyt, sometimes spelled Baekelite[3]), or polyoxybenzylmethylenglycolanhydride, is an early plastic. It is a thermosetting phenol formaldehyde resin, formed from an elimination reaction of phenol with formaldehyde. It was developed by Belgian-born chemist Leo Baekeland in New York in 1907. These slides were 2.75" in length, 0.75" in diameter, round on the tip end and flat on the other with inscription, "Nick Manoloff Pat. 2076331." They were in an array of colors such as: solid black or white marbleized/swirl: red and white; green and white; jade green and white; chocolate and white; and red and black. He made slides of several styles and sizes of metal, usually of high polished chrome, with the inscription of his name "NICK MANOLOFF". He designed steels and accessories for the Dobro, Hawaiian guitar, Resonator guitar, Spanish guitar, Resonator mandolin, Lap steel guitar, and Pedal steel guitar.