engineer harry jennings created the first folding tubular steel wheelchair for his friend harbert everest, a paraplegic. together, they founded everest and jennings, revolutionizing the industry by mass producing, lightweight portable and affordable wheelchairs. this invention set the standard for modern manual wheelchairs. the mid 20th century introduced electric wheelchairs offering greater independence for users. george klein a canadian. inventor developed one of the earliest electric wheelchair designs during world war ii to assist injured veterans. these power chairs provided increased mobility, particularly for those unable to use manual wheelchairs. since then, advancements have focused on enhancing mobility, comfort, and accessibility. in the 1970s and 1980s, ultra lightweight materials like aluminum and titanium became popular. improving maneuverability, more recently, carbon fiber has been introduced, offering even lighter and stronger frames, which significantly enhance performance and ease of use for wheelchair users. the introduction of custom molded seating systems provided