George G (c.1902-1998) should be distinguished from his father, Dr George A Spratt (1870-1934), who started the whole pivoting-wing business.
George A Spratt.
c.1935: George G Spratt,
Media PA.
USA
1936: Spratt Aircraft Inc,
Costesville PA.
USA
1982: Spratt and Co Inc.
All Aero 