BELL TELEPHONE MFG CO SA has a total of 18 patent applications. Its first patent ever was published in 1919. It filed its patents most often in Germany. Its main competitors in its focus markets basic communication technologies, telecommunications and electrical machinery and energy are HUTH ERICH F GMBH, JOHN SCOTT TAGGART and EHRET CORNELIUS D.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 18 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Telecommunications | |
| #3 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Transmission | |
| #2 | Modulation | |
| #3 | Electric discharge tubes | |
| #4 | Amplifiers | |
| #5 | Telephonic communication | |
| #6 | Generation of oscillations | |
| #7 | Demodulation | |
| #8 | Magnets and transformers |