| Patents for National Tube Co. |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 638,808 | Dec. 12, 1899 | E.F. Holinger | Vertical Piercing-Press. | |
| 742,223 | Oct. 27, 1903 | P.C. Paterson | Hot Saw | metal cutting circular saws |
| 761,348 | May 31, 1904 | J.E. Bates | Chuck for Holding Sockets | chucks |
| 762,947 | Jun. 21, 1904 | A.M. Saunders | Screw Threading Die .. | taps and dies |
| 764,550 | Jul. 12, 1904 | H.R. Borie | Vanishing Thread Tap | taps and dies |
| 769,709 | Sep. 13, 1904 | J.H. Nicholson | Tube Rolling Mill | metal rolling machines |
| 771,528 | Oct. 04, 1904 | H.E. Boyd | Threading Mechanism | pipe threading machines |
| 1,287,203 | Dec. 10, 1918 | P. Boyd, A.M. Saunders | Drill Tube Section | well digging or drilling tools |
| 1,630,690 | May 31, 1927 | A. Telfer, J.P. Bosle | Gauge | special purpose gauges |
| 1,950,912 | Mar. 13, 1934 | E.A. Aronson | Gauge | measurement gauges |
| 2,135,912 | Nov. 08, 1938 | J. Rae | Internal Diameter Micrometer | micrometers |
