1942 June 17 Convoy PQ-17 leaves Iceland for Murmansk – massive casualties from German onslaught during the trip. July 5 10 out of 27 ships reach Murmansk.
... smaller extent by the slipping friction.
The device is covered by US patents 3,726,146 (1973) and 5,353,655 (1994) by L.A. Mishler and US patent 5,800,311 (1998) by ...