| Patents for Arthur A. Koch |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 685,617 | Oct. 29, 1901 | A.A. Koch | Pump-rod balance | |
| 710,871 | Oct. 07, 1902 | A.A. Koch | Boring and tenoning machine | drill presses |
| GB-190,300,091 | Jan. 01, 1903 | A.A. Koch | Drilling and tenoning machine | drill presses |
| 946,919 | Jan. 18, 1910 | A.A. Koch | Corrugated culvert and process of producing same | |
| CA-133,141 | May 16, 1911 | A.A. Koch | Corrugated culvert and process of producing same | |
| 1,579,002 | Mar. 30, 1926 | A.A. Koch | Vise-post lock | blacksmith |
| 2,110,129 | Mar. 08, 1938 | A.A. Koch | Margin adjustment guide | paper cutters |
| 2,502,730 | Apr. 04, 1950 | A.A. Koch | Mower | mowing machines |
