ALEXANDRIA, Va., June 6 -- United States Patent no. 12,279,817, issued on April 22, was assigned to 4IZE PTY LTD (New South Wales, Australia).
"Portable sight testing apparatus" was invented by Sarah Crowe (New South Wales, Australia) and Jason Smith (Queensland, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable apparatus for determining refractive error in the human eye comprises an elongate base rail having a left side base rail portion and a right side base rail portion; a first lens carrier housing mounted on the left side base rail portion, a first lens carrier carrying a plurality of corrective lenses and being substantially housed within the first lens carrier housing so as to expose...