SF Piezolectric SF Piezolectric Oblique ver 1.0; 2001. Freeware. SFPiezolectric-Oblique SF Piezolectric Oblique is a trademark of the ShyFonts Type Foundry. ShyFonts Type Foundry ShyFonts Type Foundry SF Piezolectric Oblique is a trademark of the ShyFonts Type Foundry. http://www.shyfonts.com/ http://www.shyfonts.com/ SF Piezolectric Oblique.ttf