04299070 is referenced by 299 patents and cites 20 patents.

A box formed building panel has a section in the end walls that joins the panel to an adjacent panel and seals the joint against heat loss. The joining and sealing functions may be combined in a single construction, such as a wedge-shaped projection on one panel insertable into a sealant containing groove in the other panel, or, separate projection and groove combinations may be used for joinder and for sealing. Internal walls and stiffeners may be mounted in the building panel. The building panel may be filled with foam and auxiliary panels mounted on the building panel.

Title
Box formed building panel of extruded plastic
Application Number
6/50653
Publication Number
4299070
Application Date
June 21, 1979
Publication Date
November 10, 1981
Inventor
Axel Granz
Oldenburg
DE
Heinrich Oltmanns
2905 Edewecht, Jeddoloh I
DE
Agent
Andrus Sceales Starke & Sawall
Assignee
Heinrich Oltmanns
DE
IPC
E04C 1/30
E04C 1/10
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