New or improved adjustable self-acting or automatic supports for superseding ordinary crutches and other surgical instruments, and for improved pads or cushions to be used in combination therewith or with ordinary crutches and like appliances / [Clyde Bannister Brown].
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New or improved adjustable self-acting or automatic supports for superseding ordinary crutches and other surgical instruments, and for improved pads or cushions to be used in combination therewith or with ordinary crutches and like appliances / [Clyde Bannister Brown]. Credit: Wellcome Collection. Public Domain Mark