Some HP inkjet printers use cartridges that expire 12 or 24 months after their warranty ends, or 18 or 30 months after being installed in your printer. Some of these printers will refuse to print until you've replace an expired cartridge.
Legend of the shamrock. St Patrick. The Irish shamrock symbol is closely associated with St Patrick, the patron saint of Ireland. St Patrick is believed to have been from Scotland or Wales. Irish raiders captured and enslaved him at the end of 4th Century. He spent six years in slavery, probably in the West of Ireland.
Northern Ireland Symbols. 1  Coat of Arms: 2  Coat of Arms: The coat of arms shown above is NOT the coat of arms of Northern Ireland. Northern Ireland does not have an official coat of arms. 3  Flag of Northern Ireland.  Flower: The shamrock (a three-leafed clover) is a popular way to represent Saint Patrick's Day.