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| Patents for Lamson & Sessions Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 257,468 | May 09, 1882 | M.E. Campfield | Wrench | screw adjust wrenches | |
| 1,718,987 | Jul. 02, 1929 | J.W. Smith | Reciprocating Tool Holder of Metal Working Machines | tool holders | |
| 1,768,798 | Jul. 01, 1930 | J.W. Smith | Tool Holder | metalworking machine tool holders | |