Robert B Carlson, Barbara J Cosgrove, Paul T Meredith: Aircraft configuration with aft mounted engines. The Boeing Company, Hughes & Multer, December 11, 1990: US04976396 (35 worldwide citation)

An aircraft having two aft mounted prop engines on opposite sides of the fuselage. The side surfaces of the fuselage adjacent to the propellers are contoured so that each has an inwardly and rearwarding slanting forward region, a substantially longitudinally aligned intermediate region which is adja ...