Class E01B : PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
Subclass 3/12: Transverse or longitudinal sleepers (for switches or crossings E01B 7/22); Other means resting directly on the ballastway for supporting rails made from wood (drying or impregnating B27K) Longitudinal sleepers; Longitudinal sleepers integral or combined with tie-rods; Combined longitudinal and transverse sleepers
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 9695553 | Modular railroad track assembly | Jun 04, 15 | Jul 04, 17 | Not available |
| 7063269 | Rail support plate and related system | Aug 02, 01 | Jun 20, 06 | Not available |
| 6974087 | Railway tie plate | Jan 28, 03 | Dec 13, 05 | MSR RAIL PRODUCTS INC. |
| 6422479 | Gauge plate and switch rod insulators | Aug 28, 01 | Jul 23, 02 | KOPPERS DELAWARE, INC. |
| 6305614 | Gauge plate and switch rod insulators | Nov 27, 00 | Oct 23, 01 | KOPPERS DELAWARE, INC. |
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