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| Patents for Robert E. Bunker | |||||
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| Number | Date | Patentee | Title | Type | |
| 251,269 | Dec. 20, 1881 | G. Mee | Feeding appliance for saw-mills | sawmill feed works | |
| 257,979 | May 16, 1882 | A. Rodgers | Presser-roller for gang-saw mills | sawmill accessories | |
| 320,217 | Jun. 16, 1885 | J. Campbell | Log-loader | sawmill accessories | |
| 337,630 | Mar. 09, 1886 | J. Shavalier, A. Harvey | Band-saw mill | band sawmills | |