...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 |
| 6263814 | Strip of material with splices and products formed therefrom A package of a continuous strip of material includes a plurality of parallel side by side stacks each containing a length of the strip which is folded back and forth such that each folded portion of the stack is folded relative to the next portion about a... | 07/24/2001 |
| 5666894 | Embroidery unit for sewing machine An embroidery unit for use with a sewing machine, the sewing machine having a lower free arm (19) with a cloth feed dog (20), a column (16) with a drive unit, and a top arm (17) with a needle bar mechanism (18). The embroidery unit has a housing (10) whic... | 09/16/1997 |
| 4250822 | Low bulk, pin-type seam for use in paper making equipment fabrics, such as dryer felts A novel low bulk seam is disclosed for use in paper making machine fabrics, such as dryer felts. The seam is particularly adapted for use with multi-filament yarns which comprise multi-ply fabrics. A novel method for producing this seam is disclosed which... | 02/17/1981 |
| 4048277 | Splice for use during the thermal stabilization of a flat multifilament band of an acrylic fibrous material comprising at least two segments An improved splice is provided which is useful in joining segments of a substantially flat band (e.g., a flat tow) of an acrylic fibrous material in an end to end relationship. A fabric surrounds and is sewn to an end of each band segment and extends beyo... | 09/13/1977 |