Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1979-11-05
1981-03-03
Van Balen, William J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
428322, 428325, 428326, 428525, 521 55, B32B 326
Patent
active
042541786
ABSTRACT:
A building panel of a layered design with textured inner and outer layers separated by a core to form a wall unit. The inner and outer layers are composed of a mixture of urea-formaldehyde resin, water, plaster and a curing agent. The core is composed of similar materials with an insulation material added.
REFERENCES:
patent: 3745058 (1973-07-01), Paymal
patent: 3878278 (1975-04-01), Miller et al.
patent: 3899455 (1975-08-01), Unlerstenhoefer et al.
patent: 3986988 (1976-10-01), Sedlak et al.
patent: 4111862 (1978-09-01), Geschwender
Church Carl W.
Church Daniel K.
Church Roderick C.
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