"Telephone, n. An invention of the devil which abrogates some of the advantages of making a disagreeable person keep his distance. "
Ambose Bierce
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| Number | Title | Issue Date |
| 5509626 | Railroad track switch A railroad track switch has tongue rails which pivot relative to fixed stock rails and rolls onto which the tongue rails move when pivoted away from the stock rails. The rolls are carried at opposite ends in spring supports and each roll is mounted for le... | 04/23/1996 |