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| Patents Granted on 1955-07-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-514,587 | Jul. 12, 1955 | J.B. Armitage | Boring machine | vertical boring mills | |
| CA-514,588 | Jul. 12, 1955 | J.B. Armitage | Boring machine | vertical boring mills | |