Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Application No. | Application Title | Issue Date |
| 20070273196 | Method and apparatus for utilizing the full capacity of a particular type of mine hoist for excavating deep shafts Disclosed is a device for excavating a mine shaft, comprising a pair of drums, each drum having a pair of regions. Each region is wound with one of a pair of hoist ropes. The device is provided with four refuse carriers, each of which is attached to one of the hoist rop... | 11/29/2007 |
| 20070267224 | Drilling device and method for producing a drilling column in the soil The invention relates to a drilling device for producing a drilling column in the soil comprising a mast, a drill drive arranged on a carriage, which is movably supported along the mast, a drilling tube which can be driven in a rotating manner by the drill drive and is ... | 11/22/2007 |
