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 |
| 7146759 | Two-faced optional mat picture frames This invention discloses composite two faced picture, document and/or other artwork frames, each composed of two separate frames with panes permanently installed on elastomeric pads and fitted to allow pane to pane resilient contact with two sets of displayed materi... | 12/12/2006 |
| 6585218 | Picture stand A picture stand comprises an upper portion and a lower portion which are joined together and are configured to be non-planar relative to one another, namely the lower portion is at an angle relative to the upper portion. When the lower edge of the lower p... | 07/01/2003 |
| 6125566 | Picture frame for mounting a picture from an automobile dashboard A picture frame and method for mounting on a dashboard of an automobile comprising a transparent picture holder with a pivotable U-shaped supporting member on the backside of the holder with bent ends at the distal ends of the U-shaped supporting member, ... | 10/03/2000 |
| 6029384 | Picture frame for mounting a picture from an automobile dashboard A picture frame and method for mounting on a dashboard of an automobile. The picture frame includes a transparent picture holder with a pivotable U-shaped supporting member on the backside of the holder with bent ends at the distal ends of the U-shaped su... | 02/29/2000 |
| 6028582 | Solenoid for scanned flip-disk sign improvements An improved solenoid and reset pin for a modular display apparatus for displaying indicia at a front thereof having a frame for rotationally mounting a plurality of pixels. Each pixel includes first and second display faces joined along respective adjacen... | 02/22/2000 |
| 5813155 | Picture frame and lamp arrangement A combined display frame and lamp system is provided. This system includes a display frame; a mount fastened to the display frame; and, a lamp holder secured relative to the display frame through a connecting mechanism coupled to the mount. The system als... | 09/29/1998 |
| 5371924 | Hinges for picture frames A hinge for use with a picture frame and a set-up base, includes first and second hinge leaves, each hinge leaf having claws, the claws of the first hinge leaf for fastening the first hinge leaf to a picture frame and the claws of the second hinge leaf fo... | 12/13/1994 |
