https://patentbrief.org/company/phillips-screw-co Plain-English explanations of patents assigned to Phillips Screw Co, newest first. en-us Sat, 13 Jun 2026 10:08:40 GMT https://patentbrief.org/patent/us/2046343/phillips-screw-screwdriver A 1936 patent for a cross-shaped screw head designed to keep a screwdriver centered and prevent it from slipping during high-speed assembly. Tue, 07 Jul 1936 00:00:00 GMT https://patentbrief.org/patent/us/2046343/phillips-screw-screwdriver