| All Patents in class 82/11.5 | 
| Patents 1 - 
					15
					of 38 
       | 
| Number | Date | Patentee | Title | Type | 
| 9,092 | Jul. 06, 1852 | J.S. Brown | Turning Engine | metal lathes | 
| 1,933,224 | Oct. 31, 1933 | E.R. Smith | Tool Slide Acuating Mechanism | metalworking machine mechanisms | 
| 2,016,931 | Oct. 08, 1935 | C.C. Richard | Hydraulic Mechanism for Determining the Path of Movement of a Tool or Other Element | hydraulic apparatus | 
| 2,120,196 | Jun. 07, 1938 | L.W. Wright | Hydraulic Contouring Attachment for Machine Tools | milling machine accessories | 
| 2,124,348 | Jul. 19, 1938 | H.J. Siekmann, R.M. Bacon, W.F. Groene | Hydraulic Lathe Transmission | metalworking machine mechanisms | 
| RE21,544 | Aug. 27, 1940 | C.C. Richard | Hydraulic Mechanism for Determining the Path of Movement of a Tool or Other Element | hydraulic apparatus | 
| 2,372,426 | Mar. 27, 1945 | C. Johnson | Duplicator for machine tools | milling machine accessories | 
| 2,372,427 | Mar. 27, 1945 | C. Johnson | Machine tool control | milling machine accessories | 
| 2,399,806 | May 07, 1946 | C. Johnson | Machine-tool control | milling machine accessories | 
| 2,412,549 | Dec. 10, 1946 | T.S. Armandroff, E.W. Yates | Automatic Pattern Controlled Milling Machine | milling machines | 
| 2,464,626 | Mar. 15, 1949 | A.P. Waterson | Pilot Operated Servo Valve | metalworking machine mechanisms | 
| 2,474,134 | Jun. 21, 1949 | A.P. Waterson | Hydraulic Tool Control Unit | metalworking machine mechanisms | 
| 2,503,646 | Apr. 11, 1950 | J.C. Wilson | Apparatus for Dressing a Grinding Wheel to a Predetermined Configuration | grinder dressers | 
| 2,516,495 | Jul. 25, 1950 | A.P. Waterson | Hydraulic tool control unit | metal lathe accessories and attachments | 
| 2,549,971 | Apr. 24, 1951 | C. Johnson | Control system | milling machine accessories |