https://patentbrief.org/company/margaret-e-knight Plain-English explanations of patents assigned to Margaret E. Knight, newest first. en-us Sat, 13 Jun 2026 10:08:58 GMT https://patentbrief.org/patent/us/116842/paper-bag-machine-knight This 1871 patent by Margaret Knight describes a machine that automatically folds and glues paper to create flat-bottom bags, a major improvement over earlier V-shaped designs. Tue, 11 Jul 1871 00:00:00 GMT https://patentbrief.org/patent/us/116842/paper-bag-machine-knight