| Patents for Hazard Knowles |
Patents 16 -
21
of 21
      |
| Number | Date | Patentee | Title | Type |
| 9,284 | Sep. 28, 1852 | H. Knowles | Saw mill | reciprocating sawmills |
| 12,134 | Jan. 02, 1855 | H. Knowles | Cutter for tonguing and grooving | cutters |
| 14,160 | Jan. 29, 1856 | H. Knowles | Mortising tool | mortising machines |
| RE629 | Nov. 30, 1858 | H. Knowles | Improvement in saw-mills | reciprocating sawmills |
| 23,092 | Mar. 01, 1859 | H. Knowles | Improvement in fastening bands on bales and packages | |
| 25,125 | Aug. 16, 1859 | H. Knowles | Improvement in clasps for fastening bands on cotton bales, &c. | |
