...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7290978 | Photomask flipper and single direction inspection device for dual side photomask inspection A flipper for rotating and positioning a photomask in two flip orientations includes a flip unit rotatably held in a base. The flip unit includes a flip frame in which clamps are preferably spring loaded guided such that the clamps are oppositely and laterally displ... | 11/06/2007 |
| 5056073 | Optical disk cartridge handling apparatus An optical disk cartridge handling apparatus for storing, handling, reading and writing of optical disks contained in cartridges which store data for a host computer. The apparatus comprises an import/export element for loading and unloading cartridges in... | 10/08/1991 |
| 4504878 | System for storing and automatically retrieving recording discs A mechanism is described for storing and automatically retrieving a plurality of recording discs such as floppy discs. A plurality of recording discs are vertically disposed in a cartridge which is adapted to be held on a horizontally movable carriage whi... | 03/12/1985 |