US Patent: 551,841
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| Milling Tool
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Patentee:
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| Johann Heinrich Spoerl (exact or similar names) - Dusseldorf, Germany |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 09, 1894 |
| Granted: |
Dec. 24, 1895 |
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Joel Havens
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Description: |
| Patented in Germany, 24 Nov., 1893, #78,334; in Belgium, 13 Dec., 1893, #107,692; in England, 19 Dec., 1893, 24,444;in France, 01 Dec., 1894, #230,334 and in Austria, 19 Jan., 1895, #45/245. |
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