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CHARLES H PEARSON

Overview
  • Total Patents
    13
About

CHARLES H PEARSON has a total of 13 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United States. Its main competitors in its focus markets measurement and machines are VARAUD CLAUDE, HELMUT JUNGHANS and E H HELMUT JUNGHANS DR ING.

Patent filings in countries

World map showing CHARLES H PEARSONs patent filings in countries
# Country Total Patents
#1 United States 13

Patent filings per year

Chart showing CHARLES H PEARSONs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement
#2 Machines

Top inventors

# Name Total Patents
#1 Bold Frederick W 5
#2 Menns Walter K 5
#3 Mcgraw Walter E 1
#4 Adams George W 1
#5 Bold Fredrick W 1

Latest patents

Publication Filing date Title
US1569911A Release lever
US1556907A Spring regulator
US1639075A Aerial-bomb fuse
US1681390A Time fuse for aerial bombs
US1532369A Fuse
US1532368A Fuse
US1025821A Device for improving the tone of cathedral-gongs for clocks.
US1029880A Electromagnetic instrument.
US1008484A Electromagnetic instrument.
US1035378A Electromagnetic instrument.
US689899A Clock-case.
US650979A Ship's-bell clock.
US633257A Clock.