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Patents for John B. Ball | |||||
Number | Date | Patentee | Title | Type | |
1,412,888 | Apr. 18, 1922 | L. Novak | Scraping Tool | scraper planes | |
2,109,057 | Feb. 22, 1938 | J.B. Ball, F.W. Billker | Cutting machine | printer | |
2,165,953 | Jul. 11, 1939 | J.B. Ball, F.W. Billker | Cutting machine | printer |