CENTRAL RAILWAY SIGNAL CO has a total of 130 patent applications. Its first patent ever was published in 1908. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, machines and basic materials chemistry are HENRI COUSIN, FRANK DUTCHER and LLEWELLYN WYNN WILLIAMS.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 94 | |
#2 | Canada | 36 |
# | Industry | |
---|---|---|
#1 | Transport | |
#2 | Machines | |
#3 | Basic materials chemistry | |
#4 | Civil engineering | |
#5 | Consumer goods |
# | Technology | |
---|---|---|
#1 | Guiding railway traffic | |
#2 | Explosive charges | |
#3 | Explosives | |
#4 | Railway equipment | |
#5 | Fire-fighting | |
#6 | Chemical means for extinguishing fires | |
#7 | Laundering textiles |
# | Name | Total Patents |
---|---|---|
#1 | Dutcher Frank | 78 |
#2 | Frank Dutcher | 18 |
#3 | Bemisderfer Harvey O | 6 |
#4 | Pfeil Elmer C | 5 |
#5 | Clark Robert M | 4 |
#6 | Edmands John W | 4 |
#7 | Ross Louis S | 3 |
#8 | Wiley Edmands John | 3 |
#9 | Clark Cadwallader J | 2 |
#10 | Wedger Walter L | 2 |
Publication | Filing date | Title |
---|---|---|
US2391823A | Igniter for grenades and the like | |
US1807456A | Fire extinguishing composition | |
US1776354A | Support for time burning signals and other pyrotechnical devices | |
US1704231A | Safety railway signal torpedo and process of making the same | |
US1504032A | Railway signal torpedo | |
US1517966A | Railway signal torpedo | |
US1458745A | Railway signal torpedo | |
US1452997A | Railway signal torpedo | |
US1486014A | Flare light | |
US1475805A | Railway signal torpedo | |
US1403490A | Railway signal torpedo | |
US1430959A | Time burning railway signal fusee | |
US1402583A | Railway signal torpedo | |
US1421188A | Railway signal torpedo | |
US1385315A | Railway signal-torpedo | |
US1398846A | Railway signal-torpedo | |
US1385316A | Railway signal-torpedo | |
US1385314A | Railway signal-torpedo | |
US1414264A | Railway signal torpedo | |
US1385312A | Railway signal-torpedo |