Methods or devices for filling or emptying bunkers, hoppers, tanks, or like

Official title: Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass (devices for tilting and emptying containers B65G65/23; such containers having means facilitating filling or emptying B65D88/54)

B65G65/30 (Methods or devices for filling or emptying bunkers, hoppers, tanks, or like) appears on 1,254 US grants and 988 published applications in this corpus.