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| Patents for Harry May | |||||
| Number | Date | Patentee | Title | Type | |
| CA-640,739 | May 01, 1962 | H. May, E. Coulon | Method and Apparatus for Preparing Mitered Tubular Joints | pipe and tube notchers | |
| 3,074,302 | Jan. 22, 1963 | H. May, E. Coulon | Method of Preparing Mitered Tubular Joints | pipe and tube notchers | |
| 3,162,078 | Dec. 22, 1964 | H. May, E. Coulon | Apparatus for Preparing Mitered Tubular Joints | pipe and tube notchers | |