https://patentbrief.org/company/may-b-cornwall Plain-English explanations of patents assigned to MAY B CORNWALL, newest first. en-us Mon, 15 Jun 2026 05:53:29 GMT https://patentbrief.org/patent/us/1469997/iletin-insulin A 1923 patent by May B. Cornwall describing a structural design for a suspended monorail train system intended for efficient passenger or cargo transport. Tue, 09 Oct 1923 00:00:00 GMT https://patentbrief.org/patent/us/1469997/iletin-insulin