| Patents for John H. McKewen |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 2,000,420 | May 07, 1935 | L.L. Schauer, A.M. Sosa, J.H. McKewen | Hydraulic transmission system | radial drill presses |
| 2,000,421 | May 07, 1935 | L.L. Schauer, A.M. Sosa, J.H. McKewen | Duplex control for radial drills | radial drill presses |
| 2,027,705 | Jan. 14, 1936 | L.L. Schauer, J.H. McKewen | Double dial control for hydraulic radial drills | radial drill presses |
| 2,027,706 | Jan. 14, 1936 | L.L. Schauer, J.H. McKewen | Counterbalance valve | drill presses |
| 2,089,228 | Aug. 10, 1937 | L.L. Schauer, J.H. McKewen | Combination drilling and tapping control | tapping machines |
| 2,108,780 | Feb. 15, 1938 | L.L. Schauer, J.H. McKewen | Submerged motor | drill presses |
| 2,108,781 | Feb. 15, 1938 | L.L. Schauer, J.H. McKewen | Cylinder mounting for hydraulic motors | drill presses |
| 2,318,335 | May 04, 1943 | J.H. McKewen, L.L. Schauer | Spindle control for drilling and tapping machines | drill presses |
| D144,141 | Mar. 12, 1946 | L.L. Schauer, J.H. McKewen | Design for a radial drill | radial drill presses |
| 2,401,276 | May 28, 1946 | L.L. Schauer, J.H. McKewen | Tripping mechanism | drill presses |
| 2,811,053 | Oct. 29, 1957 | J.H. McKewen | Pre Select Hydraulic Shifting Means | hydraulic apparatus |
| 2,860,430 | Nov. 18, 1958 | J.H. McKewen | Prescheduling Means for Machine Tool | machine tool controls |
