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| All Patents in class 29/725 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,080,169 | Dec. 02, 1913 | A.S. Reed | Ball-bearing construction | |
| 2,997,778 | Aug. 29, 1961 | C.R. Barkley | Apparatus for assembling and securing ball bearings within a retainer | ||