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"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 5584095 | Vacuum cleaner having improved steering features An upright steerable vacuum cleaner is provided, which includes the use of a pivotable cylindrical motor housing, as well as a universal joint which is attached to the motor housing, such that twisting at the upper body of the vacuum cleaner clockwise cau... | 12/17/1996 |
