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| Patents for Ralph C. Fritzsch | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,705,501 | Apr. 05, 1955 | R.C. Fritzsch | Non-repeat valve | sheet metal brakes | |
| 2,734,609 | Feb. 14, 1956 | R.C. Fritzsch | Pneumatic clutch control | sheet metal brakes | |