| All Patents in class 331/127 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 454,622 | Jun. 23, 1891 | N. Tesla | System of electric lighting | |
| 462,418 | Nov. 03, 1891 | N. Tesla | Method of and apparatus for electrical conversion and distribution | |
| 514,168 | Feb. 06, 1894 | N. Tesla | Means for generating electric currents | |
| 568,177 | Sep. 22, 1896 | N. Tesla | Apparatus for producing ozone | |
| 568,180 | Sep. 22, 1896 | N. Tesla | Apparatus for producing electrical currents of high frequency | |
| 1,114,840 | Oct. 27, 1914 | W.C. Woodland | Wireless telegraphy | telegraphy apparatus |
| 1,376,080 | Apr. 26, 1921 | C.W. De Mooy | High-frequency machine | |
| 1,376,081 | Apr. 26, 1921 | C.W. De Mooy | High-frequency Generator of the Transformer Type | electric generators |
