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| 5285588 | Winged plow |
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| 5281053 | Underground tubular structural system and process for producing i... |
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| 5271170 | Scoop for a mobile implement |
| 5271168 | Pipeline padding machine |
| 5271167 | Means for blocking flow of material from scraper bowl |
| 5271166 | Conveyor chain arrangement for ballast cleaning machine |
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| 5257471 | Excavator for forming underground continuous wall |
| 5253953 | Boom for containing oil spills |
| 5251389 | Brace for maintaining relative arm-dipper angle |
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| 5249378 | Hydraulic thrust producing implement |
| 5247743 | Method and apparatus for digging trenches |
| 5248218 | Snake cleanable fluid flow system |
| 5246307 | Submerged breakwater and barrier reef |
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