US Patent Class 238
RAILWAYS: SURFACE TRACK-- Main Headings
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| CLASS NOTES | ||
| 1 | DF | MISCELLANEOUS |
| 2 | DF | ROADBED {4} |
| 10 R | DF | PORTABLE TRACK {9} |
| 14.05 | DF | ELECTRICAL CONNECTIONS {9} |
| 15 | DF | TRACK CURVES {1} |
| 17 | DF | GUARDRAILS {5} |
| 24 | DF | STRINGERS {2} |
| 27 | DF | TIE ARRANGEMENT {1} |
| 29 | DF | TIES {9} |
| 109 | DF | PEDESTALS {7} |
| 121 | DF | RAIL ARRANGEMENT |
| 122 | DF | RAILS {20} |
| 151 | DF | RAIL JOINTS {28} |
| 264 | DF | RAIL SEATS {15} |
| 287 | DF | TIE-PLATES {16} |
| 310 | DF | FASTENINGS {12} |
| 379 | DF | FOOT GUARDS {2} |
| 382 | DF | DEADENING NOISE |
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| DIGEST | ||
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| DIG 1 | DF | Track structure assembled by gluing |