Roofing element

Details Roofing element Roofing element

2007-03-13

2007-03-13

Yip, Winnie (Department: 3636)

Static structures (e.g., buildings)

Having means forming cavity, core, or cell in slab

C052S309120, C052S439000, C052S404300, C052S783100, C052S793110

Reexamination Certificate

active

10440127

ABSTRACT:
A roofing element comprises a structural box of concrete and an insulating layer extending inside the structural box.

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patent: WO 80/00232 (1980-02-01), None
patent: WO 99/51829 (1999-10-01), None

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