"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 |
| 8166745 | Tool for extracting and inserting pins of roller chains A tool for inserting and extracting pins of roller chains includes a body having a bridge adapted to engage a chain and a drive screw assembly coupled to the main body on a first side of the bridge. The drive screw assembly includes a drive screw which is rotatable ... | 05/01/2012 |