 He said the engrossed application (also called the "fair copy") was mailed to him from his lawyers on January 18, 1876 and that he signed it and had it notarized in Boston on January 20.But this statement by Bell is disputed by Evenson, who argues that the seven sentences and Claim 4 were inserted into Bell's patent application without Bell's knowledge on February 13 or 14, just before Bell's application was hand carried to the Patent Office by one of Bell's lawyers.Evenson argues that it was not Wilber who leaked Gray's ideas to Bell's attorney Anthony Pollok after Gray's caveat was filed with the patent office, but somebody in the office of Gray's attorney William D. Baldwin, perhaps Baldwin himself, who leaked the variable resistance idea and the water transmitter idea to Bell's attorney before Gray's caveat and Bell's application were filed.