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NAT SCREW AND MFG COMPANY

Overview
  • Total Patents
    34
About

NAT SCREW AND MFG COMPANY has a total of 34 patent applications. Its first patent ever was published in 1921. It filed its patents most often in Canada and United States. Its main competitors in its focus markets machine tools, machines and electrical machinery and energy are BARTHOLOMAEUS RUDOLF, NAT ACME CO and PIPE MACHINERY COMPANY.

Patent filings in countries

World map showing NAT SCREW AND MFG COMPANYs patent filings in countries
# Country Total Patents
#1 Canada 25
#2 United States 9

Patent filings per year

Chart showing NAT SCREW AND MFG COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Steinfurth Louis 5
#2 Mortus Benjamin H 3
#3 Hopkins Howard L 3
#4 Hodell Frederick G 3
#5 Laisy Rudyard E 3
#6 Erdman Harvey C 3
#7 Hatherell George A 2
#8 Frantz John K 2
#9 Bartmess Meigs W 2
#10 Money Glenn L 1

Latest patents

Publication Filing date Title
US2969553A Multiple spindle machine tool apparatus with improved work holding chuck means
US2486561A Buckle for emergency tire chains
US1685319A Metal-working machine
US1692275A Hopper feed for metal-working machines
US1668787A Automatic feed for metal-working machines
US1651486A Electric switch
US1530975A Lamp fixture
US1476790A Centrifugally-operated circuit-controlling device
US1530974A Nut-castellating machine
CA796507A Blind fastener
CA373061A Nut tapping machine
CA527972A Screw slotting machine
CA264175A Nut castellating machine
CA598272A Countersunk flexible head threaded fastener
CA513968A Screw
CA501319A Blank feeding apparatus
CA286131A Metal working machine
CA522911A Blank sizing and pointing machine
CA501318A Slotting machine
CA741986A Blind fastener