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BARNES WALTER C

Overview
  • Total Patents
    42
About

BARNES WALTER C has a total of 42 patent applications. Its first patent ever was published in 1921. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, measurement and electrical machinery and energy are SPERRY PROD INC, TRANERGY CORP and CHENGDU LEAD SCIENCE & TECHNOLOGY CO LTD.

Patent filings in countries

World map showing BARNES WALTER Cs patent filings in countries
# Country Total Patents
#1 United States 35
#2 Canada 7

Patent filings per year

Chart showing BARNES WALTER Cs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Barnes Walter C 42
#2 Keevil Henry W 30
#3 Dionne John C 2
#4 William Brazitis 1
#5 Bluff Lake 1
#6 Barnes William O 1
#7 Kcevil Henry W 1
#8 Keevil Harry W 1

Latest patents

Publication Filing date Title
US2671197A Magnetizing means for rail flaw detector systems
US2602109A Flaw detector carriage
US2689940A Flaw detection apparatus
US2571999A Apparatus for detecting flaws
US2571998A Method and apparatus for detecting flaws in rail or the like
US2555308A Flaw detection apparatus
US2497856A Apparatus and method for detecting flaws in magnetizable bodies
US2461252A Method and apparatus for detecting flaws
US2461253A Flaw detection apparatus
US2497855A Flaw detecting method and apparatus for ferromagnetic bodies
US2425857A Apparatus for detecting flaws in rails
US2472784A Method and apparatus for detecting flaws
US2356968A Rail flaw detecting unit
US2317721A Method and apparatus for detecting flaws
US2317720A Method and apparatus for detecting flaws in magnetizable bodies
US2317719A Method and apparatus for detecting flaws in magnetizable bodies
US2410803A Method and apparatus for detecting flaws in rails
US2356967A Flaw detecting apparatus
US2313729A Track testing apparatus
US2337148A Flaw detecting apparatus