Number | Name | Date | Kind |
---|---|---|---|
3151747 | McGoogan | Oct 1964 | |
3478632 | Schmermund | Nov 1969 |
Number | Date | Country |
---|---|---|
62-74543 | Apr 1987 | JPX |
Entry |
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Brochure of Straight Line Manufacturing, Inc. for Direct Line DL1510. |
Technical Report Direct Line 4010 of Straight Line Manufacturing, Inc. (dated Oct. 10, 1994). |
Brochure of Ditch Witch JT 2310 Directional Boring System (dated Mar., 1995). |