Brick Details
| Type | Unknown |
| Maker | Charles Potter (inventor) |
| City | Holyoke |
| State | MA |
| Properties | |
| Notes | Patent #597540. Flooring brick for paper mills. Charles Potter of Holyoke, MA was the inventor. Manufacturer unknown. Holyoke had numerous mills but no known brick manufacturing. The bricks would allow water from the vats and paper process to pass through them in gaps formed by the ridges then drain away below. |
| Brand | Line Properties | Notes |
| PAT’D.JAN.4.1898 | FP | Pat. 596540 draining floor |
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