Never heard of them.... and can't corrupt any I have heard of to that phrase..
There's the Northrop Gamma style, which could be considered to resemble a "park bench" back rest... they're raised up from the aileron surface itself, similar to a modern spade device, but much more span.
No current images of a Gamma in my library, but I have seen some somewhere..
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Sometime later that same day..
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A link ...
http://www.angelfire.com/va2/aerodrome/alpha/gamma.html
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An image..notice the caption at the site...