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 |
| 7341146 | Screwdriver with dual cam slot for collated screws A screwdriver for driving collated screws including a slide body coupled to a housing for reciprocal displacement in a cycle including a retraction stroke and an extension stroke. A lever pivotably mounted to the slide body carries at one end a cam pin received in a... | 03/11/2008 |
| 7243794 | Tattoo needle case with needle head protection arrangement A tattoo needle case including a seat having a front section, a rear section including a plurality of lengthwise, parallel grooves, and a breakable section at a joining line of the rear section and the front section, the breakable section includes a cavity; a plural... | 07/17/2007 |
| 6983847 | Needle packaging A needle package (1), particularly for packaging needles (N), has a hold-down device (23) that is disposed in an interior space (I) and serves to secure the needles (N) in the interior space (I). The hold-down device (23) is formed, for example,... | 01/10/2006 |
