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| Patents for Harry J. May | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-677,723 | Jan. 07, 1964 | H.J. May | Perforating Apparatus for Tubing | pipe and tube notchers | |
| 3,153,963 | Oct. 27, 1964 | H.J. May, E.I. Coulon | Apparatus for Shearing the Ends of Tubing | pipe and tube notchers | |
| 3,180,196 | Apr. 27, 1965 | H.J. May, E.I. Coulon | Apparatus for Shearing the Ends of a Tubular Member | pipe and tube notchers | |