Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9818267 | Doorbell system and doorbell chime | Christopher Parker, Felix Haeffner, Iphin Rangson | 2017-11-14 |
| D795728 | Door chime | Christopher Parker, Felix Haeffner, Iphin Rangson | 2017-08-29 |
| D795115 | Door chime | Christopher Parker, Felix Haeffner, Iphin Rangson | 2017-08-22 |