Harold "Harry" DeArmond (January 28, 1906 – October 12, 1999) was an industrial designer of electrical components. He is credited with developing the first commercially available detachable guitar pickup. DeArmond established a working relationship with Horace "Bud" Rowe, whose Rowe Industries subsequently manufactured and developed pickups and other music-related devices into the 1980s. The first RH ("round-hole") and FH ("F-hole") guitar microphones were constructed in 1939. "Mounted within a