JEWELL ELECTRICAL INSTR CO has a total of 12 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States and Canada. Its main competitors in its focus markets measurement, electrical machinery and energy and telecommunications are JIANGSU QIYUAN LEIYU ELECTRICAL TECH CO LTD, EVERETT CHARLES TECH and HWANG DONG WEON.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 9 | |
#2 | Canada | 3 |
# | Industry | |
---|---|---|
#1 | Measurement | |
#2 | Electrical machinery and energy | |
#3 | Telecommunications | |
#4 | Machines |
# | Technology | |
---|---|---|
#1 | Measuring electric variables | |
#2 | Magnets and transformers | |
#3 | Unspecified technologies | |
#4 | Transmission | |
#5 | Resistors | |
#6 | Electrically-conductive connections |
# | Name | Total Patents |
---|---|---|
#1 | Ray Simpson | 5 |
#2 | Miller John H | 4 |
#3 | Olesen Harold L | 1 |
#4 | Elvin Folen Nels | 1 |
#5 | Hawley Douglass | 1 |
Publication | Filing date | Title |
---|---|---|
US1955418A | Illuminated connecter | |
US1949634A | Radio testing apparatus | |
US2053101A | Thermionic tube testing device | |
US1824561A | Balance mechanism for instruments | |
US1745722A | Electrical measuring instrument | |
US1776793A | Electrical measuring instrument | |
US1704151A | Spool for electrical instruments and the like | |
US1720381A | Resistor | |
US1590449A | Electrical meter | |
CA319971A | Radio testing device | |
CA333777A | Audion tube circuit testing apparatus | |
CA311097A | Radio tube testing instrument |