Quotables
"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 |
| 5461985 | Traveling trolley, in particular single-rail trolley with compact height The invention is directed to a traveling trolley, in particular a single-rail trolley having a compact height. A traveling trolley constructed in accordance with the present invention includes a supporting frame with running wheels that run on the bottom ... | 10/31/1995 |
| 4799916 | Motorless toy vehicle and propelling track A motorless toy vehicle and propelling track. The toy vehicle includes a gear housing having a drive system, the drive system including a drive gear and a ratchet means for controlling the direction of rotation of the drive gear. The track is adapted to r... | 01/24/1989 |
| 4702661 | Robot carrier structure A robot carrier structure constituted by a portal wagon movable on rails and laterially supported by a pair of carriages each comprising a pair of wheels longitudinally coupled by motion transmission means actuated in synchronism by an electric motor. Fur... | 10/27/1987 |
| 4062296 | Drive trucks A bridge truck assembly for cranes and the like is provided having at least two in-line wheels on a side engaging a trackway, a prime mover drivingly connected to one wheel and a pair of rotatable drive members engaging the circumference of both said in-l... | 12/13/1977 |
