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LEWIS JOHN F

Overview
  • Total Patents
    27
About

LEWIS JOHN F has a total of 27 patent applications. Its first patent ever was published in 1897. It filed its patents most often in United States and Canada. Its main competitors in its focus markets mechanical elements, furniture and games and civil engineering are WOONCHANG MECATEC CO LTD, SHENZHEN ESMARTGYM SCIENCE AND TECH CO LTD and SILLIK FRANCISCO J.

Patent filings in countries

World map showing LEWIS JOHN Fs patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 9

Patent filings per year

Chart showing LEWIS JOHN Fs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lewis John F 27
#2 Lloyd John 1

Latest patents

Publication Filing date Title
US5308071A Apparatus for improving a golfer's putting stroke
CA2082894A1 Traffic control barriers
US5107653A Hollow stackable building block
CA2029710C Hollow stackable building block
CA1297254C Building construction element
CA1260509A Golf putter
US1255898A Perch.
US1175648A Track-rail.
US1062719A Method of shaping hollow metal articles.
CA140936A Method of shaping hollow metal articles
US1087795A Press.
US1066928A Automatic grease-cup.
US1013408A Rail-fastening.
US1016507A Method of shaping hollow metal articles.
US1015626A Automatic grease-cup.
CA116756A Railway rail chair
US1003276A Automatic grease-cup.
US788269A Automatic grease-cup.
US718006A Sounding apparatus.
CA69077A Lubricator