573.11  Claims filed after action brought.
  The court may permit claims to be filed with it during the pendency of the action hereinafter authorized, if it be made to appear that such belated filing will not materially delay the action.
[C24, 27, 31, 35, 39, §10309; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §573.11]