Put back erroneous change to class title data type - should be string.
Put back erroneous change to class title data type - should be string.

I had an update that I had failed to check in before, and thus when I
did it reverted Evgeny's change. This should make it right.

CSSIP-AIR/PatentsView-API,CSSIP-AIR/PatentsView-API,CSSIP-AIR/PatentsView-API