US PATENT SUBCLASS 449 / 6
.~ Observation

Current as of: June, 1999
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449 /   HD   BEE CULTURE

3  DF  HIVE {19}
6.~ Observation

DEFINITION

Classification: 449/6

Observation:

(under subclass 3) Structure including provision to allow viewing of the interior of the hive without opening the hive.