The picture on the right is of our test rig and wind tunnel model in black. On the left is a close-up of the swept aerofoil hosel viewed from the heel of the golf club head. A white wash has been applied as one method to analyze air flow patterns.
If you believe the top point 'A' is further forward than bottom point 'B' on this picture of a golf club head featuring an aerofoil hosel. Then Golf Refugees back in 2005 / 06 at Cranfield University UK, designed, built and proved via wind tunnel testing the increased aerodynamic efficiency of a 'swept aerofoil hosel' for a golf club head several years before Callaway Golf's 2012 US Patent. ----------------------------------------------------------