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| Patents for Charles P. Steinmetz | |||||
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| Number | Title | Classification(s) | |||
| 513,992 | Method of and means for developing dyed stiff hat-bodies | 223/15 | |||
| 596,186 | Phase Regulator | 318/829, 323/201 | |||
| 609,016 | Electric elevator | 318/263, 318/293 | |||
| 620,965 | Alternating Current Motor | 310/172, 318/797 | |||
| 620,966 | Induction Motor | 318/816 | |||