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| Patents for John L. Baltzer | |||||
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| Number | Date | Patentee | Title | Type | |
| 789,520 | May 09, 1905 | J.A. Adell, J.L. Baltzer | Automatic prick-punch | punches | |
| 813,997 | Feb. 27, 1906 | L.S. Starrett, J.L. Baltzer | Base Attachment for Center Gages | ||