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 |
| 7937787 | Wall bed assembly A wall bed assembly including a wall cabinet and a bed frame. The bed frame is pivoted from a vertical, stored position within the wall cabinet to a horizontal position for use as a bed. The bed frame is connected to the wall cabinet with a pivot bracket secured to ... | 05/10/2011 |
| 7243383 | Modular superstructure for supporting multiple hammocks A system of tripods, bipods and/or unipods is used to support a polygonal array of horizontal spars joined by connector hubs. The array may be extended indefinitely, in order to support a desired number of hammocks. As few as three different stock components are req... | 07/17/2007 |
| 5446932 | Folding wall bed A folding wall bed provides a frame which is pivotable from a substantially vertical stowed position to a substantially horizontal functional position. A headboard structure rises when the frame is folded to its functional position. The folding wall bed f... | 09/05/1995 |
| 5035012 | Portable hammock kit and improved portable hammock A portable hammock kit having aminimum of modular components for assembling and disassembling the modular components for storage or transportation to another location and store all components in a convenient carrying bag. The hammock stand can be assemble... | 07/30/1991 |
