FIELD STEPHEN DUDLEY has a total of 11 patent applications. Its first patent ever was published in 1902. It filed its patents most often in United States and United Kingdom. Its main competitors in its focus markets digital networks, electrical machinery and energy and telecommunications are EASTERN TELEGRAPH CO LTD, KINSLEY CARL and ERNEST SYDNEY HEURTLEY.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 8 | |
#2 | United Kingdom | 3 |
# | Industry | |
---|---|---|
#1 | Digital networks | |
#2 | Electrical machinery and energy | |
#3 | Telecommunications |
# | Technology | |
---|---|---|
#1 | Digital information transmission | |
#2 | Electric switches | |
#3 | Transmission |
# | Name | Total Patents |
---|---|---|
#1 | Field Stephen Dudley | 11 |
Publication | Filing date | Title |
---|---|---|
US975756A | Multiplex-telegraph apparatus. | |
US883530A | Telegraph-repeater. | |
US889592A | Telegraph system. | |
GB190603630A | Improvements in and relating to a Neutral Relay for use in Duplex and Quadruplex Telegraphy. | |
GB190512914A | Improvements in Telegraphic Receiving-apparatus | |
US812557A | Method of receiving telegraphic signals. | |
US800844A | Quadruplex telegraphy. | |
GB190404176A | Improvements in and relating to Multiplex Telegraphy. | |
US755647A | Multiplex telegraphy. | |
US755646A | Multiplex telegraphy. | |
US734689A | Vibratory telegraphy. |