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| Patents for Second National Bank of Baltimore | |||||
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| Number | Date | Patentee | Title | Type | |
| D57,576 | Apr. 26, 1921 | S.D. Black, A.G. Decker | Design for a portable electric tool | handheld power drills | |
| D57,812 | May 10, 1921 | S.D. Black, A.G. Decker | Design for a housing for electric air compressors and motors | air compressors | |