"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 |
| 5427143 | Gas flow and pressure regulation and control station A gas flow and pressure regulation and control station to be connected directly between a distribution line of an urban gas distribution network and a user service line, the station including an inlet connector to be connected directly to the distribution... | 06/27/1995 |