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| Patents for Isaac P. Richards | |||||
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| Number | Date | Patentee | Title | Type | |
| 104,769 | Jun. 28, 1870 | I.P. Richards | Metal Punch | metal punches | |
| RE4,228 | Jan. 03, 1871 | I.P. Richards | Punching Metal | metal punches | |
| 134,219 | Dec. 24, 1872 | I.P. Richards | Improvement in tool-holders for lathes | wood lathes | |
| 469,377 | Feb. 23, 1892 | I.P. Richards | Rotary Tool Holder for Lathes | lathe tool holders and tool posts | |