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| All Patents in class 409/295 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,250,181 | May 10, 1966 | J.R. Bashor | Fully automatic keyway shaper | keyway cutting machines | |
| 7,695,224 | Apr. 13, 2010 | P.J. Gleason | Deburring Welded Pipe | deburring apparatus | |