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| Patents for National Tube Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,287,203 | Dec. 10, 1918 | A.M. Saunders, P. Boyd | Drill Tube Section | ||
| 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 | |