Respondent points to the provision in Section 302(a) of the Act, 56 Stat. 36, 50 U.S.C.A.Appendix ?? 942(a), to the effect that the term 'sale' as used in the Act includes 'sales, dispositions, exchanges, leases, and other transfers, and contracts and offers to do any of the foregoing,' as well as to a similar provision in Section 1499.20(r) of the General Maximum Price Regulation.