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Title: |
1909 ad - Patent high speed surfacing, boring, milling and drilling machine (Pearn's patent) |
Source: |
1909 The Engineering Journal, via eBay |
Insert Date: |
1/13/2017 10:35:49 AM |
The "Pearn's patents, 1905 & 1907" refers to a pair of patents that were applied for in those years but issued in 1906 and 1908, respectively. |
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