Fairly early examples are:
 2/70     TEC inc. model 410/415, 420/425, 430/435
 4/70     Applied Digital Data Systems (ADDS) Consul 920 
My old friend Ray Borrill's first company...
  5/70     Univac Uniscope 100
 10/70    Hazeltine 2000 
Ah, one of my favorites, used magnetic core for the memory;
however, it would usually lose a byte or two on either
powering down or back on again...
-dq