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| Patents for John D. Pierce | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,553,836 | Sep. 15, 1925 | J.D. Pierce | Mattress-making machine | ||
| 1,621,999 | Mar. 22, 1927 | J.D. Pierce | Combination woodworking machine | tablesaws | |