Spratt Patents

 

George A. Spratt Patent # 1,331,289, filed September 5, 1918, granted February 17, 1920

 

George G. Spratt Patent # 3,415,469, filed September 22, 1966, granted December 10, 1968

 

 

Home EAA Articles by George Spratt Patents
Spratt and Chanute Spratt and the Wrights The Wright Brothers Letters
Some Early Spratt Aircraft Prototype Spratt CarPlane 1934 Original Spratt ControlWing Engine
More Articles Controlwing Flying Boat Spratt, Schmittle, and Freewing
Biographic Information Controlwing Aircraft French Controlwing
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