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His pressure regulator is still used in the same form as him or His team invented. It was for laughing gas, but propane, CO2, O2, N2 and the rest all use that i
by Projectiboga 3y ago
His pressure regulator is still used in the same form as him or His team invented. It was for laughing gas, but propane, CO2, O2, N2 and the rest all use that invention. Don't forget the phonograph, motion picture, the condenser microphone and the old telegraph/telephone switch either.