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