Hugo and Sidney Gernsback were questioned at an April 19 hearing about the operation of the Experimenter Publishing and the Consrad Company. They were questioned by attorneys for the Irving Trust Company and B. A. MacKinnon "to discover any assets which may have been concealed or diverted." Attorneys for Mr. MacKinnon, questioned the method of the bankrupt companies in allowing hotels space for advertising in the magazines published by the Gernsbacks for trade bills (vouchers) instead of cash. The Gernsbacks explained that the space assigned to the hotels was unsold at the press date and the ads were "fillers." The trade bills were given to wholesalers, advertisers and others with whom they did business.