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| Patents for Fritz Paul Grutzner | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,123,358 | Jul. 12, 1938 | F.P. Grutzner | Engine Silencing Hood | ||
| 2,189,895 | Feb. 13, 1940 | F.P. Grutzner | Heating and Ventilating System | ||
| 2,208,157 | Jul. 16, 1940 | F.P. Grutzner | System for Recovering and Utilizing Waste Heat | ||
| 2,266,193 | Dec. 16, 1941 | F.P. Grutzner | Heating System | ||
| D149,553 | May 11, 1948 | F.P. Grutzner | Locomotive Body | ||
| 2,482,168 | Sep. 20, 1949 | F.P. Grutzner | Vehicle Truck and Body Interlock | ||