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Patents for Edwin S. Piper | |||||
Number | Date | Patentee | Title | Type | |
65,598 | Jun. 11, 1867 | E.S. Piper | Improvement in hardening saws | tool making machines | |
126,232 | Apr. 30, 1872 | E.S. Piper | Improvement in machines for making saw-handles | tool making machines | |
556,554 | Mar. 17, 1896 | E.S. Piper | Cork Extractor | non worm cork extractors |