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| Patents for Bowker & Williams Hoop Machine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 257,918 | May 16, 1882 | W. Bowker | Machine for sawing barrel-hoops from poles | |
 | 259,661 | Jun. 20, 1882 | W. Bowker | Band-saw guide | |
 | 271,672 | Feb. 06, 1883 | R. Williams | Machine for sawing hoops from poles | |
 | 272,996 | Feb. 27, 1883 | W. Bowker, R. Williams | Machinery for sawing barrel-hoops from poles | |
 | 286,173 | Oct. 09, 1883 | W. Bowker | Machine for sawing hoops and poles | |
 | 348,149 | Aug. 24, 1886 | W. Bowker | Hoop-sawing machine | |