"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 6857147 | Synchronization drive for a longitudinal axis telescopic guidance mechanism Certain embodiments include a system and method for synchronized telescopic guidance along a longitudinal axis in a patient positioning system. The system includes a top channel driven by a motor, a bottom channel synchronized with the top channel, and a rack and pi... | 02/22/2005 |