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PETERSON CHARLES W

Overview
  • Total Patents
    15
About

PETERSON CHARLES W has a total of 15 patent applications. Its first patent ever was published in 1922. It filed its patents most often in United States and Canada. Its main competitors in its focus markets audio-visual technology and optics are VINCENT PIERRE, THEODORE LINDENBERG and NECKERMANN VERSAND KGAA.

Patent filings in countries

World map showing PETERSON CHARLES Ws patent filings in countries
# Country Total Patents
#1 United States 11
#2 Canada 4

Patent filings per year

Chart showing PETERSON CHARLES Ws patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Audio-visual technology
#2 Optics

Focus technologies

# Technology
#1 Loudspeakers and microphones
#2 Cameras
#3 Optical systems

Top inventors

# Name Total Patents
#1 Peterson Charles W 15

Latest patents

Publication Filing date Title
US3035501A View finders for cameras
US2920136A Infrared telescope
US2187093A Camera
US1797965A Loud-speaker-driving motor
US1815987A Conical diaphragm for loud speakers
US1591233A Electrical phonograph reproducer and the like
US1692762A Loud speaker
US1643029A Loud speaker
US1583490A Loud speaker
US1734271A Conical-diaphragm sound reproducer
US1491208A Electrical sound-converting apparatus
CA257587A Electrical sound converting apparatus
CA302469A Electrical phonograph reproducer
CA311846A Loud speaker motor
CA262564A Sound mechanism