| Number | Name | Date | Kind |
|---|---|---|---|
| 1161741 | Smoter | Nov 1915 | A |
| 1163431 | Maranda et al. | Dec 1915 | A |
| 1230533 | Stiles | Jun 1917 | A |
| 1463943 | Fallon | Aug 1923 | A |
| 1628882 | Hoffman et al. | May 1927 | A |
| 1872848 | Told | Aug 1932 | A |
| 3026074 | Kern | Mar 1962 | A |
| 3063641 | Frey | Nov 1962 | A |
| 4355776 | Rydin | Oct 1982 | A |
| 4386751 | Meyer | Jun 1983 | A |
| 4566630 | Keiper, Jr. | Jan 1986 | A |
| 4738418 | Farrell | Apr 1988 | A |
| 5115970 | Rice et al. | May 1992 | A |
| 5169064 | Rice et al. | Dec 1992 | A |
| 7137601 | Christ et al. | Nov 2006 | B2 |
| 20110121089 | Seki et al. | May 2011 | A1 |
| Entry |
|---|
| Switch Point Guard, www.voestalpine.com/nortrak, web page. |
| Switch Point Protectors & Guards, www.harmersteel.com, web page. |
| Switch Point Guards, www.rrtools.com, web page. |
| Guard Rails, Unitrac Railroad Materials, Inc., catalog. |