A home owner from Billings mt says:
August 21, 2016
Has number patent # 5,410,778. White foldable window crank. Need replacemento for handle crank only . Extended length is about 3" long.
Tom from SWISCO responded:
August 23, 2016
I'm afraid we don't have a handle that folds quite like this. We do have folding handles, but they are not hinged like yours appears to be. Start with our 39-205 and see if you can use this. Keep in mind that the most important measurement is the spline diameter. In the case of the 39-205, this measurement is 11/32".