POLYTECHNIC RES AND DEV COMPAN has a total of 12 patent applications. Its first patent ever was published in 1947. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets measurement, electrical machinery and energy and telecommunications are HUGH SUTHERLAND MACADIE, KD ELEKTROIZMERIT PRIBOROV and KOUKEN COMPANY LTD.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 8 | |
#2 | Germany | 2 | |
#3 | United Kingdom | 2 |
# | Industry | |
---|---|---|
#1 | Measurement | |
#2 | Electrical machinery and energy | |
#3 | Telecommunications | |
#4 | Machine tools | |
#5 | Basic communication technologies |
# | Name | Total Patents |
---|---|---|
#1 | Finke Herbert A | 4 |
#2 | Johnson Stanley A | 3 |
#3 | Gaffney Francis J | 3 |
#4 | Hopfer Samuel | 2 |
#5 | Waller William E | 2 |
#6 | Arnold Finke Herbert | 1 |
#7 | Ebert John E | 1 |
#8 | Melvin Goodhue William | 1 |
#9 | Henry Sonnenschein Abraham | 1 |
Publication | Filing date | Title |
---|---|---|
GB801005A | An improved method of cutting linear gaps in metallic films | |
GB785623A | Improvements relating to standing wave indicator | |
DE1023141B | Device for testing standing waves | |
DE1005631B | Bolometer for measuring the high frequency power in coaxial power transmission lines | |
US2748276A | Shielded-line tunable resonator | |
US2667618A | Bolometer for coaxial transmission lines | |
US2752494A | Wide range resonator | |
US2650347A | Impedance measuring bridge | |
US2644889A | Mode suppressor for external cavity klystron oscillators | |
US2597081A | Joint for wave guides | |
US2666904A | Microwave frequency meter | |
US2553910A | Selective signaling system |