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