Abstract :
The following discussion and clostures were received too late to he included with the papers: "Short-Time Impulse Voltage Characteristics of Tank-Type Oil Circuit Breakers" [Discussion and author\´s closure of paper 53- 347 by V.E. Phillips and R.H. Miller, published in Power Apparatus and Systems, October, 1953, pages 998-1000] and "New Line of Low-Voltage Air Circuit Breakers" [Authors\´ closure of paper 53-149 by B.S. Beall, III, and V.N. Stewart, published in Power Apparatus and Systems, Dec. 1953, pages 1207-1215].