Corrugated polymeric zigzag sheet for greenhouse roof...

Static structures (e.g. – buildings) – Lapped multiplanar surfacing; e.g. – shingle type – Interfitted sections

Reexamination Certificate

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Details

C052S018000, C052S202000, C052S473000, C052S783110, C052S786100

Reexamination Certificate

active

06959519

ABSTRACT:
A sheet structure includes a pair of corrugated sheets formed in a zigzag pattern, the pair comprising an upper sheet and a lower sheet. In an exemplary embodiment, each of the pair of corrugated sheets further includes a flat portion disposed at selected intervals between individual zigzags. The flat portions of the upper sheet are aligned with corresponding flat portions of the lower sheet so as to maintain the upper and lower sheets in a double wall configuration.

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PCT Search Report for PCT/US2004/007093.

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