JOSEPH ENGL DR has a total of 17 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 electrical machinery and energy, audio-visual technology and optics are FIDELITY FILMS LTD, MICRION CORP and SIEGMUND LOEWE.
# | Country | Total Patents | |
---|---|---|---|
#1 | Germany | 17 |
# | Industry | |
---|---|---|
#1 | Electrical machinery and energy | |
#2 | Audio-visual technology | |
#3 | Optics |
# | Technology | |
---|---|---|
#1 | Electric discharge tubes | |
#2 | Special information storage | |
#3 | Photosensitive materials | |
#4 | Electric switches | |
#5 | Special electric heating or lighting |
# | Name | Total Patents |
---|---|---|
#1 | Joseph Engl Dr | 1 |
#2 | Vogt Hans | 1 |
#3 | Joseph Massolle | 1 |