Patents for John E. Poorman |
Patents 1 -
13
of 13
|
Number | Date | Patentee | Title | Type |
2,047,222 | Jul. 14, 1936 | J.E. Poorman | Tool Holder | lathe tool holders and tool posts |
2,188,917 | Feb. 06, 1940 | J.E. Poorman | Tool Post | lathe tool holders and tool posts |
2,206,047 | Jul. 02, 1940 | J.E. Poorman | Tap and Die Holder | tap and die holders |
2,309,668 | Feb. 02, 1943 | J.E. Poorman | Grinding Machine | surface grinders |
2,309,669 | Feb. 02, 1943 | J.E. Poorman | Grinding Machine | surface grinders |
2,343,577 | Mar. 07, 1944 | J.E. Poorman | Grinding Machine | surface grinders |
2,384,044 | Sep. 04, 1945 | J.E. Poorman | Reversing Mechanism | metalworking speed changing mechanisms |
2,579,611 | Dec. 25, 1951 | J.E. Poorman | Knurling Tool | knurling tools |
2,724,302 | Nov. 22, 1955 | J.E. Poorman | Tool to Be Attached to a Screw Machine or the Like | screw machines |
2,870,661 | Jan. 27, 1959 | J.E. Poorman | Knurling Tool | knurling tools |
2,870,662 | Jan. 27, 1959 | J.E. Poorman | Cross-Slide Knurling or Like Tool | knurling tools |
2,875,629 | Mar. 03, 1959 | J.E. Poorman | Adjustable Off-Center Drill Holder | drill press chucks |
2,875,662 | Mar. 03, 1959 | J.E. Poorman | Cross-slide Form Tool Holder | metalworking machine tool holders |