B65D 11/1813

And one or more side walls being foldable along a median line

Official title: {and one or more side walls being foldable along a median line}

B65D11/1813 (And one or more side walls being foldable along a median line) appears on 2 US grants and 2 published applications in this corpus.

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2
Published applications
2
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2
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2
Latest grant
22 Jul 2014