BLAND, Associate Judge.
Appellant's alleged invention, involved in this appeal, relates to a mastic substance for waterproofing and like purposes. It is said to be particularly adapted for roofing purposes where it is applied as a coating for saturated felt or fabric sheets. While all the claims do not specify a bituminous base, the invention seems to relate chiefly to a roofing mastic comprising a bituminous plastic body.
Claims 1 and 9 are regarded as typical...
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