US PATENT SUBCLASS 249 / 209
.~.~ Arch-like centering, e.g., culvert, tunnel, bridge, arch, etc.
Current as of:
June, 1999
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249 /
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STATIC MOLDS
205
DF
MISCELLANEOUS MOLD ADJUNCTS
{2}
207
DF
.~ In situ construction engineering or building type {5}
209
.~.~ Arch-like centering, e.g., culvert, tunnel, bridge, arch, etc.
DEFINITION
Classification: 249/209
(under subclass 207) Apparatus comprising molding surface supports for a product having an arch.
