Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8070108 | Signaling and remote control train operation | — | 2011-12-06 |
| 7954435 | Sound systems for model railroad locomotives | — | 2011-06-07 |
| RE42284 | Signaling techniques for DC track powered model railroads | Patrick A. Quinn | 2011-04-12 |