US4558775A patents.google.com
US4558775A US06/559,423 US55942383A US4558775A US 4558775 A US4558775 A US 4558775A US 55942383 A US55942383 A US 55942383A US 4558775 A US4558775 A US 4558775A Authority US United States Prior art keywords container receiving station control unit central control station Prior art date 1983-12-08 Legal status (The legal status is an assumption and is not a legal conclusion.
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