Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 6450858 | Beehive movable top entrance A beehive (100) for honey production comprising a movable top entrance (104) positioned above a brood chamber (102). The movable top entrance is operative to releasably mount to the top of the brood chamber. In addition, the movable top entrance is operat... | 09/17/2002 |
