Patents for Paul R. Hahnemann |
Patents 1 -
6
of 6
|
Number | Date | Patentee | Title | Type |
833,716 | Oct. 16, 1906 | P.R. Hahnemann | Sheet-metal hollow-ware drawing-press | stamping presses |
1,406,004 | Feb. 07, 1922 | P.R. Hahnemann | Metal Working Machine | thread rolling machines |
1,521,367 | Dec. 30, 1924 | P.R. Hahnemann | Gauge for Machines for Folding Sheet Metal | gauges |
1,735,243 | Nov. 12, 1929 | P.R. Hahnemann | Slip Roll Forming Machine | sheet metal forming rolls |
1,742,654 | Jan. 07, 1930 | P.R. Hahnemann | Slip Rol Forming Machine | sheet metal forming rolls |
1,812,479 | Jun. 30, 1931 | P.R. Hahnemann | Sheet metal working machine | sheet metal |