Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5038018 | Electrical heating | Frederick G. J. Grise, Lawrence J. Morgan, Demetrius Maikantis, John A. Marstiller | 1991-08-06 |
| 5019797 | Electrical resistance device | John A. Marstiller, Frederick G. J. Grise | 1991-05-28 |
| 4912306 | Electric resistance heater | Frederick G. J. Grise, John A. Martstiller | 1990-03-27 |
| 4892998 | Semi-conductive electrical heating device with voids | John A. Marstiller, Frederick G. J. Grise | 1990-01-09 |
| 4888089 | Process of making an electrical resistance device | John A. Marstiller, Frederick G. J. Grise | 1989-12-19 |
| 4849255 | Electric resistance heater | Frederick G. J. Grise, John A. Martstiller | 1989-07-18 |
| 4783578 | Multi-conductor cables | John A. Marstiller, Frederick G. J. Grise | 1988-11-08 |