| All Patents in class 83/191 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 390,327 | Oct. 02, 1888 | S. Wheeler | Machinery for perforating toilet or wrapping paper | |
| 3,005,369 | Oct. 24, 1961 | F. Koster | Method of Notching and Shearing the Ends of Tubing in the Preparation of Tubular Assemblies | pipe and tube notchers |
| 3,033,066 | May 08, 1962 | E. Coulon | Apparatus for Slotting the Ends of Tubing | pipe and tube notchers |
| 3,073,195 | Jan. 15, 1963 | F. Koster | Apparatus for Notching the Ends of Tubing in the Preparation of Tubular Assemblies | pipe and tube notchers |
| 3,074,302 | Jan. 22, 1963 | H. May, E. Coulon | Method of Preparing Mitered Tubular Joints | pipe and tube notchers |
| 3,153,360 | Oct. 20, 1964 | E.I. Coulon | Apparatus for Slotting the Ends of 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 |
| 3,162,078 | Dec. 22, 1964 | H. May, E. Coulon | Apparatus for Preparing Mitered Tubular Joints | pipe and tube notchers |
