Section 20: Discharge of liability.

The liability of the Government of the Federation shall-(a) in respect of any Government promissory note redeemed on or after the date on which payment of the principal sum becomes due, be discharged after the lapse of six years from that date;
(b) in respect of any Government promissory note in place of which a duplicate is issued under section 18 of this Act, be discharged after the lapse of six years from the date of the issue of such duplicate or from the date of the last payment of interest on such note, whichever date is the later;
(c) in respect of any Government promissory note for which a renewed note is issued under section 18 of this Act, be discharged after the lapse of six years from the date of the issue of the renewed note.