PURVES CORP has a total of 11 patent applications. Its first patent ever was published in 1940. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets measurement, machines and electrical machinery and energy are ISENTEK INC, MICROTEST S R L and YUAN FU TE.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 6 | |
#2 | United Kingdom | 4 | |
#3 | Germany | 1 |
# | Industry | |
---|---|---|
#1 | Measurement | |
#2 | Machines | |
#3 | Electrical machinery and energy | |
#4 | Telecommunications | |
#5 | Basic communication technologies | |
#6 | Computer technology |
# | Technology | |
---|---|---|
#1 | Measuring electric variables | |
#2 | Measuring distances | |
#3 | Unspecified technologies | |
#4 | Static stores | |
#5 | Amplifiers | |
#6 | Dynamo-electric machines | |
#7 | Transmission systems |
# | Name | Total Patents |
---|---|---|
#1 | Beach Lennox F | 6 |
#2 | Purves John C | 2 |
#3 | Beach Lennox Frederick | 1 |
Publication | Filing date | Title |
---|---|---|
GB604907A | Improvements in and relating to apparatus sensitive to magnetic fields | |
US2427654A | Remote reading flux valve compass system | |
US2476273A | Apparatus sensitive to magnetic fields | |
GB611204A | Improvements relating to magnetic field responsive devices | |
GB611205A | Improvements relating to magnetic field responsive devices | |
US2374166A | Magnetic field responsive device | |
US2410039A | Magnetic field responsive device | |
GB599428A | Improvements relating to apparatus and systems responsive to the intensity and direction of a magnetic field | |
US2383460A | Magnetic field responsive device | |
US2383459A | Indicator for magnetic fields |