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| Patents for Marcius C. Richards | |||||
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| Number | Date | Patentee | Title | Type | |
| 438,587 | Oct. 14, 1890 | M.C. Richards | Door-hanger | door and window hardware | |
| 621,710 | Mar. 21, 1899 | M.C. Richards | Sliding-door hanger | door and window hardware | |
| 623,035 | Apr. 11, 1899 | M.C. Richards | Adjustable track for sliding doors | door and window hardware | |