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  "abstract": "Buffer wall systems and methods may comprise a plurality of shelves with associated buffer conveyors, and a gantry system with one or more powered conveyors. The gantry system may align the powered conveyors with individual buffer conveyors for item storage or retrieval. In addition, power transmission mechanisms of the powered conveyors may be actuated to engage and provide power to the buffer conveyors in order to cause transfer of items therebetween.",
  "assignees": [
    "AMAZON TECH INC"
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    "FRENKEL ALEXANDER M",
    "JOHNSON BRUCE",
    "NICKLOS CARL"
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  "title": "Buffer wall systems with multiple conveyor shelves and associated methods of use",
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