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NAT LOCK CO

Overview
  • Total Patents
    300
About

NAT LOCK CO has a total of 300 patent applications. Its first patent ever was published in 1903. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, civil engineering and furniture and games are EAGLE LOCK COMPANY, KEIL FRANCIS & SON INC and AMERICAN SWISS CO.

Patent filings in countries

World map showing NAT LOCK COs patent filings in countries
# Country Total Patents
#1 United States 232
#2 Canada 43
#3 United Kingdom 17
#4 France 6
#5 Germany 2

Patent filings per year

Chart showing NAT LOCK COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 North Edwin W 62
#2 Burke William O 30
#3 Stone Roy A 20
#4 Edwin North 20
#5 Anderson Ralph F 18
#6 Wilson William B 15
#7 Aldeen Gedor W 12
#8 Spon Carroll V 12
#9 Beckman Melvin H 10
#10 Bates Wayne C 9

Latest patents

Publication Filing date Title
GB1156106A Locking Means for a Door Lock.
US3393029A Lid and motor board lift support
GB1164013A Method and Apparatus for Die Casting Key Plugs
GB1160518A Plate Tumbler Plugs for Cylinder Locks.
US3400490A Pocket door assembly
GB1121206A Lock assembly with a removable bolt
US3352135A Plate tumbler plugs
GB1121898A Pop-out handle and lock assembly
GB1121897A Pop-out handle and lock assembly
US3414309A Magnetic catch assembly
US3418683A Combined hinge and catch assembly
US3418682A Hinge and catch assembly
US3370591A Receptacle and follower assembly
US3369832A Door catch assembly
US3402579A Flush mounted lock assembly
US3360898A Concrete weld plate
US3377763A Shear clamp
US3360897A Reinforcement chair
US3363377A Metal intersection stud
US3400564A Dust cap assembly for tumbler locks