| All Patents in class 226/190 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 103,474 | May 24, 1870 | V. Knecht | Improved pulley-sheave | industrial machine pulleys and belt drive mechanisms |
| 604,661 | May 24, 1898 | H.M. Johnston, G.W. Mason | Lumber-edger | circular ripsaws |
| 612,958 | Oct. 25, 1898 | I. Stone | Web tension device | |
| 838,772 | Dec. 18, 1906 | D. Crane | Holding-down rolls for sawmills | sawmills |
| 920,948 | May 11, 1909 | J.L. Graham | Press-roll mechanism | sawmills |
| 3,180,207 | Apr. 27, 1965 | J.F. Herrmann | Viewing Device for Microfilm Strip | microfilm viewers |
