https://patentbrief.org/company/james-l-plimpton Plain-English explanations of patents assigned to James L. Plimpton, newest first. en-us Sat, 13 Jun 2026 10:09:45 GMT https://patentbrief.org/patent/us/37305/roller-skates-plimpton A 19th-century invention that introduced pivoting wheels to roller skates, allowing users to steer by leaning their bodies. Tue, 06 Jan 1863 00:00:00 GMT https://patentbrief.org/patent/us/37305/roller-skates-plimpton