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| Patents for J. E. Cambridge | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 185,442 | Dec. 19, 1876 | P.A. Gladwin | Improvement in Match-Planes | |
 | 191,026 | May 22, 1877 | J.A. Caldwell | Tool For Tightening and Fastening Straps For Securing Hose To Coupling | |
 | 197,717 | Dec. 04, 1877 | J.A. Caldwell | Implement for Tightening and Fastening Straps or Bands Employed in Securing Hose to Couplings | |