CA Patent: CA-387,198
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Milling attachment
Attachment for cutting keyways
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Patentee:
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| Michael Hanna (exact or similar names) - Glen Rogers, WV |
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Patent Dates:
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| Granted: |
Mar. 05, 1940 |
CIPO Data
Espacenet patent
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Jeff Joslin
Vintage Machinery entry for Alva Allen Industries
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Description: |
| This milling-machine accessory is for cutting keyways in shafts. This is the equivalent to US patent 2,140,957 and both patent numbers were seen in a catalog from Alva Allen Industries for their "Model M Milling Attachment... This attachment was a Blue Ribbon winner at the National Inventors Congress Convention". |
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