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| Patents for James Martin Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 144,258 | Nov. 04, 1873 | G.H. Copping | Improvement in lozenge-cutting machines | ||
| 186,925 | Feb. 06, 1877 | W. Dicks | Improvements in Adjustable-Grasp Wrenches | quick adjust wrenches | |
| 193,088 | Jul. 17, 1877 | B. Holly | Improvement in Street Mains or Pipes for Supplying Large Districts with Heat for Warming Buildings | steam apparatus | |