owned
POLYTECHNIC RESEARCH AND DEVELOPMENT COMPANY INCORPORATED
owned
POLYTECHNIC RESEARCH AND DEVELOPMENT COMPANY INCORPORATED
Trademarks owned by 'POLYTECHNIC RESEARCH AND DEVELOPMENT COMPANY INCORPORATED'
Summary of page content
1947-10-17
503953
1948-11-16
US
9
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
electrical apparatus for the measurement and control of high frequency electric waves
2020-05-31
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