| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 5 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Electrical machinery and energy | |
| #3 | Control |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Spark gaps and corona devices | |
| #3 | Alarm systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Butler Myron C | 15 |
| #2 | Hilligoss Lawrence O | 7 |
| #3 | Boswell Lanny E | 3 |
| #4 | Madore Christopher L | 3 |
| #5 | Madore Christopher | 3 |
| #6 | Van Winkle David | 2 |
| #7 | Humphreys Mark R | 1 |
| #8 | Alter George | 1 |
| #9 | Hilligoss Willam R | 1 |
| #10 | Hilligoss William R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5903817A | Automated hard-copy mobile remote communication apparatus, system and method | |
| US5896569A | Wireless access to telephone network dial tone | |
| US5903624A | Data terminal for telephone circuits | |
| US5235629A | Apparatus for telephone line checking | |
| EP0454316A2 | Data terminal for communicating over a telephone circuit | |
| US4991195A | Apparatus and method for testing a telephone circuit protector | |
| US5025466A | Telephone test instrument |