A bee hive having a body having an interior which is open to access by bees via a hive entryway, said entryway having means for removably retaining a control element for control of bee activity in the entryway. The hive entryway includes an outside opening and an upright side wall of the hive body, an...http://www.google.com.tw/patents/US4007504?utm_source=gb-gplus-share專利 US4007504 - Hive entryway
