1
John Merlette: Foot prosthesis and method of making same. Robert R Mallinckrodt, Philip A Mallinckrodt, September 25, 1990: US04959073 (120 worldwide citation)

A foot prosthesis comprising an elongate composite main member having a leg section and a toe section with one end of the leg section adapted to be connected to an amputation socket and the other end smoothly curving forwardly through an ankle section into the toe section and extending to a toe end, ...


2
John Merlette: Foot and leg prosthesis and method of making same. Mallinckrodt & Mallinckrodt, October 20, 1992: US05156631 (64 worldwide citation)

A foot prosthesis and multi-step process for making same, has an upper main member and a sole member as dual segments of the prosthesis and arrangements for removably securing the prosthesis to a stump socket. The upper member has a U-shaped shank strut and flat ankle transition zone and an anterior ...


3
John Merlette: Foot and leg prosthesis and method of making same. CRP, Workman Nydegger & Seeley, January 14, 1997: US05593456 (55 worldwide citation)

A foot prosthesis comprised of a single monolithic elongated composite member having a semi-flexible shank strut section, an ankle section, a forefoot section, and a toe section. One end of the shank strut section is connected to a socket which is adapted to receive an amputated leg stump. The other ...