| Year | 1938 |
| Date | 29-Dec |
| Volume | 79 |
| Issue | 1,964 |
| Page | 614 |
| Category | Electrical |
| Part | |
| Title | The Manufacture of Electrical Insulating Materials |
| Author | |
| Notes | Micanite commutator insulating rings, coating machines for paper and fabrics, steam-heated hydraulic press for making "Paxolin" boards, The Micanite and Insulator Co. |