Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D831571 | Current limiter lug adapter | Frank Joseph Stifter, Jr. | 2018-10-23 |
| 10068735 | Electrical switching apparatus, and operating mechanism and lever assembly therefor | Frank Joseph Stifter, Jr., David Turner, Kenneth M. Fischer, Edward A. Prince | 2018-09-04 |
| 10044117 | MCCB current limiter lug adapter | Frank Joseph Stifter, Jr. | 2018-08-07 |
| 9917382 | MCCB current limiter lug adapter | Frank Joseph Stifter, Jr. | 2018-03-13 |