| Patents for Joseph H. Hoern |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 1,772,082 | Aug. 05, 1930 | J.H. Hoern | Device for Assembling and Holding Piston Rings for Machining Operations | metalworking machine mechanisms |
| 1,783,121 | Nov. 25, 1930 | J.H. Hoern | Piston Ring Burr Removing Device | surface grinders |
| 1,900,112 | Mar. 07, 1933 | J.H. Hoern | Grinding machine | cylindrical grinders |
| 1,910,767 | May 23, 1933 | J.H. Hoern | Method of making tappets | gas and gasoline engines |
| 1,925,384 | Sep. 05, 1933 | J.H. Hoern | Ring Resawing Machine | metal cutting circular saws |
| 2,240,440 | Apr. 29, 1941 | J.H. Hoern | Apparatus for Honing Internal Screw Threads | honing machines |
| 2,259,640 | Oct. 21, 1941 | J.H. Hoern | Thread Forming Apparatus | metal threading machines |
| 2,265,561 | Dec. 09, 1941 | J.H. Hoern | Method of Making Valve Tappets | internal combustion engines |
| 2,359,477 | Oct. 03, 1944 | J.H. Hoern | Method of Making Hollow Head Valves | internal combustion engine valves |
| 2,367,398 | Jan. 16, 1945 | J.H. Hoern | Thread Rolling Apparatus | metal threading machines |
| 2,456,060 | Dec. 14, 1948 | C.G. Pardee, J.H. Hoern | Rotor Grinder | cylindrical grinders |
| 2,540,520 | Feb. 06, 1951 | J.H. Hoern | Machine | horizontal drilling machines |
| 2,633,777 | Apr. 07, 1953 | J.H. Hoern | Indexing mechanism for station type machines | vertical boring mills |
| 2,641,146 | Jun. 09, 1953 | C.E. Dilts | Boring and Turning Machine | boring and turning machines |
| 2,659,961 | Nov. 24, 1953 | C.E. Dilts | Turning and Boring Machine | boring and turning machines |
