| 833 | Vectorcardiograph | Vectorcardiograph. |
| 833 | Vectorcardiograph | Vectorcardiograph. |
| K896396 | MIDA SYSTEM, MODELS 1000/1100 | MEDICAL GRAPHICS CORP. |
| K823934 | CARIEL F12 | ODAM |
| K810529 | DIRECT WRITING VECTORCARDIOGRAPH | ELMED, INC. |
| 00190776381127 | Vectorcardiograph |