US PATENT SUBCLASS 449 / 22
.~.~ Moth control means
Current as of: June, 1999
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Moth control means:
(under subclass 20) Structure intended to restrict passage such that a moth is limited in movement therethrough.
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16, for an alighting board that is movable to restrict passage into the hive which, if moved to the restricting position, may be used to prevent moths entering at night.
25, for a manually closable hive entrance which, if in the closed position, may prevent moths entering at night.