Joint toilet tissue holder patent awarded with her sister, designed for accessibility.
On October 19, 1982, Mary Kenner and her sister Mildred received US Patent 4,354,643 for a toilet tissue holder designed to ensure accessibility and convenience, keeping the loose end of the roll within easy reach. This invention merged practicality with accessibility, embodying Kenner's philosophy of creating products that simplify everyday life. Collaborating with her sister highlighted the synergy between the Davidson siblings in tackling ordinary challenges with extraordinary solutions, standing as a testament to their shared legacy as prolific inventors who sought to improve the functional aspects of everyday objects.