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| Patents for Arthur A. Day | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,392,305 | Oct. 04, 1921 | A.A. Day | Door structure for air-washers and the like | ||
| 1,402,147 | Jan. 03, 1922 | A.A. Day | Air washer and the like | ||
| CA-217,984 | Apr. 25, 1922 | A.A. Day | Air washer | ||
| CA-217,985 | Apr. 25, 1922 | A.A. Day | Door structure for air washers | ||