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NAT LOCK WASHER CO

Overview
  • Total Patents
    179
About

NAT LOCK WASHER CO has a total of 179 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets machines, civil engineering and transport are O M EDWARDS COMPANY, EDWARDS OLIVER M and REPUBLIC IND CORP.

Patent filings in countries

World map showing NAT LOCK WASHER COs patent filings in countries
# Country Total Patents
#1 United States 128
#2 Canada 45
#3 France 3
#4 United Kingdom 3

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Joseph Schunk 25
#2 Loutrel Cyrus H 20
#3 Hoyt Daniel 20
#4 Mohun John L 12
#5 Kuehlman Norman V 12
#6 Golden Robert F 10
#7 Daniel Hoyt 7
#8 Armstrong John L 6
#9 Henry Piesch 6
#10 Mccrudden Frederick R 6

Latest patents

Publication Filing date Title
US2550300A Window glass mounting
US2500297A Weather strip for bus or car window construction
US2476947A Bus or car window construction
US2409711A Sash lock for bus or car window construction
US2409710A Bus or car window construction
US2409709A Bus or car window construction
US2391970A Continuous furnace
US2361785A Shade construction
US2337667A Feed mechanism for assembly machines
US2385141A Bolt track and assorter
US2364797A Magazine filling mechanism
US2378711A Assembly track and assorter
US2369785A Washer feed and orienting mechanism
US2354839A Bus or car window construction
US2333940A Assembly machine
US2282531A Vehicle window sill construction
US2299954A Bus or car window construction
US2255822A Curtain fixture
US2233643A Window construction
US2207262A Rail fastener