US PATENT SUBCLASS 52 / 135
.~ Concentric barrier sections with dissimilar sealing lamina therebetween

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

128  DF  BURIAL VAULT {8}
135.~ Concentric barrier sections with dissimilar sealing lamina therebetween

DEFINITION

Classification: 52/135

(under subclass 128) Structure including concentric inner and outer wall layers with a sealing material that is different from the material of the receptacles, e.g., asphalt or Portland cement, between the receptacles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

265, for a floor and wall formed by a laminated barrier enclosing a space.

267+, for a laminated wall enclosing a space.

408+, for a construction involving a preshaped dividing lamina.