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| All Patents in class 138/154 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 127,438 | Jun. 04, 1872 | A.P. Stephens | Improvement in the manufacture of cement pipes | |
 | 946,919 | Jan. 18, 1910 | A.A. Koch | Corrugated culvert and process of producing same | |
 | 1,841,300 | Jan. 12, 1932 | W.T. Scarritt | Tubing | |
 | 1,869,224 | Jul. 26, 1932 | W.T. Scarritt | Receptacle and method of making the same | |