作者: Peter C. Craig
DOI:
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摘要: The present invention provides a novel collapsible pen that is used in combination with widely available modular unit the shipping industry. economical to use by virtue of fact may be stored inexpensively minimum space disassembled state, assembled quickly, and easily readily permit alternate uses freight unit. consists erected on standardized rectangular platform which has at least one side open air. made up panels. panels are attached platform, can alone or any end walls create an enclosure.