| Patents for Arthur A. Koch |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 685,617 | Oct. 29, 1901 | A.A. Koch | Pump-rod balance |
 | 710,871 | Oct. 07, 1902 | A.A. Koch | Boring and tenoning machine |
| | GB-190,300,091 | Jan. 01, 1903 | A.A. Koch | Drilling and tenoning machine |
 | 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 |
 | 2,110,129 | Mar. 08, 1938 | A.A. Koch | Margin adjustment guide |
 | 2,502,730 | Apr. 04, 1950 | A.A. Koch | Mower |
