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DOBBIE JOHN CLARK

Overview
  • Total Patents
    24
About

DOBBIE JOHN CLARK has a total of 24 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United Kingdom and United States. Its main competitors in its focus markets measurement are FREDERICKS CO, GEORGE ANDREW HEATH and PLATH FA C.

Patent filings in countries

World map showing DOBBIE JOHN CLARKs patent filings in countries
# Country Total Patents
#1 United Kingdom 22
#2 United States 2

Patent filings per year

Chart showing DOBBIE JOHN CLARKs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement

Top inventors

# Name Total Patents
#1 Dobbie John Clark 24

Latest patents

Publication Filing date Title
GB191002277A Improvements relating to Magnetic Compasses.
GB190920563A Improvements in Mariners' Compasses and like Instruments.
GB190824248A Improvements in Winches
GB190821995A Improvements in Indicators for Motive Power Engines.
GB190728197A Improvements in Navigational Sounding Apparatus.
GB190719224A Improvements in and relating to Mariners' Compasses.
GB190513527A Improvements in or relating to Gimbals for Suspending Compass Bowls.
GB190504702A Improved Means for Suspending the Bowl of the Mariner's Compass.
GB190502720A Improvements in Azimuth Instruments.
GB190410314A Improvements in Ship's Logs.
GB190407537A Improvements in Steam Engine Indicators.
GB190324881A Improvements in Deep Sea Sounding Machines
GB190309661A Improvements in Deep Sea Sounding Machines.
GB190108305A Improvements in and relating to the Mariners' Compass.
GB189925712A Improvements in Navigational Sounding Apparatus.
GB189925244A Improvements in Steam Engine Indicators.
US728553A Navigational sounding apparatus.
GB189912658A Improvements in Navigational Sounding Apparatus.
GB189908735A Improvements in Steam Engine Indicators.
GB189901915A Improvements in Navigational Sounding Apparatus.