US PATENT SUBCLASS 52 / 141
.~.~.~ Tongue and groove type

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

128  DF  BURIAL VAULT {8}
139  DF  .~ With separately placeable closure in abutting relation to wall edges {2}
140  DF  .~.~ With sealing material retaining construction {1}
141.~.~.~ Tongue and groove type

DEFINITION

Classification: 52/141

(under subclass 140) Structure including a closure and receptacle wall juncture feature of the tongue-and-groove type and in which the sealing material is in the groove and the tongue is embedded in the sealing material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

436, for a construction where there is a settable material section between integral interengaging means or modules.