See United States v. Petty Motor Co. , 327 U.S. 372, 379-80 (1946) (explaining “fundamental difference between the taking of a part of a lease and the taking of the whole lease”); Intertype Corp. v. Clark-Cong. Corp. , 240 F.2d 375, 380 (7th Cir. 1957) (analyzing Petty Motor , supra ; United States v. Gen. Motors Corp. , 323 U.S. 373 (1945); and United States v. Westinghouse Elec. & Mfg. Co. , 339 U.S. 261 (1950)).