| Patents for John H. McKewen |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
| | 2,000,420 | May 07, 1935 | L.L. Schauer, A.M. Sosa, J.H. McKewen | Hydraulic transmission system |
| | 2,000,421 | May 07, 1935 | L.L. Schauer, A.M. Sosa, J.H. McKewen | Duplex control for radial drills |
| | 2,027,705 | Jan. 14, 1936 | L.L. Schauer, J.H. McKewen | Double dial control for hydraulic radial drills |
| | 2,027,706 | Jan. 14, 1936 | L.L. Schauer, J.H. McKewen | Counterbalance valve |
| | 2,089,228 | Aug. 10, 1937 | L.L. Schauer, J.H. McKewen | Combination drilling and tapping control |
| | 2,108,780 | Feb. 15, 1938 | L.L. Schauer, J.H. McKewen | Submerged motor |
| | 2,108,781 | Feb. 15, 1938 | L.L. Schauer, J.H. McKewen | Cylinder mounting for hydraulic motors |
 | 2,318,335 | May 04, 1943 | J.H. McKewen, L.L. Schauer | Spindle control for drilling and tapping machines |
 | D144,141 | Mar. 12, 1946 | L.L. Schauer, J.H. McKewen | Design for a radial drill |
 | 2,401,276 | May 28, 1946 | L.L. Schauer, J.H. McKewen | Tripping mechanism |
