Phillips screw and driver
The Phillips screw and driver, originally invented by Portlander John P. Thompson, dramatically increased the speed of manufacturing and made the Phillips scre…| www.oregonencyclopedia.org
The Oregon Encyclopedia of History and Culture provides definitive, authoritative information written in accessible and literate language about the State of Oregon, including significant individuals, places, institutions, events, peoples, and artistic expressions.| www.oregonencyclopedia.org
The Phillips screw and driver, originally invented by Portlander John P. Thompson, dramatically increased the speed of manufacturing and made the Phillips scre…| www.oregonencyclopedia.org
