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Karl Marx
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| Number | Title | Issue Date |
| 5035668 | Beehive A beehive includes a housing, a plurality of frames disposed in parallel with the frame and access doors which allow the frames to be inserted and withdrawn laterally. The frames are offset from the inner surfaces of the housing to minimize the contact ar... | 07/30/1991 |
| 4133065 | Modular beehive construction and component therefor Modular beehive. For a beehive assembly, there is provided a triangular module having a pair of triangular end members connected by a perforated panel, the perforations in said panel being of such size as to permit the passage therethrough of worker bees ... | 01/09/1979 |
| 3999237 | Bee hive The hive comprises a central tower of any height or capacity on which are mounted as many supers or brood boxes as needed. The supers or boxes are so mounted on the tower that each one is removable separately without the need to shift or disturb adjacent ... | 12/28/1976 |