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| Patents for Charles E. Van Norman | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,788,475 | Jan. 13, 1931 | C.E. Van Norman | Feed mechanism for grinding machines | grinders | |
| 1,858,693 | May 17, 1932 | C.E. Van Norman | Chuck | chucks | |
| 1,881,984 | Oct. 11, 1932 | C.E. Van Norman | Slide Mechanism for Precision Grinding Machines | grinding machines | |
| 1,908,577 | May 09, 1933 | C.E. Van Norman | Oscillating Grinder | grinding machines | |