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SMITH LEWARD N

Overview
  • Total Patents
    15
About

SMITH LEWARD N has a total of 15 patent applications. Its first patent ever was published in 1973. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets machines, civil engineering and machine tools are ITO SHOKAI KK, GNI PI UGOLNOJ PROMY and HIRADO KINZOKU KOGYO KK.

Patent filings in countries

World map showing SMITH LEWARD Ns patent filings in countries
# Country Total Patents
#1 United States 6
#2 Canada 5
#3 Australia 2
#4 Japan 2

Patent filings per year

Chart showing SMITH LEWARD Ns patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Machines
#2 Civil engineering
#3 Machine tools

Focus technologies

# Technology
#1 Milling
#2 Dredging
#3 Grinding or polishing devices

Top inventors

# Name Total Patents
#1 Smith Leward N 15

Latest patents

Publication Filing date Title
CA2381889A1 Sideboard assembly for waste processing machine
CA2354105A1 Replaceable raker assembly for processing tool of waste processing machine
CA2266176A1 Break-away processing tool for a waste processing machine
US4685250A Sharpener for industrial knife blades
US4442635A Sharpener for industrial knife blades
US4313283A Sharpener for industrial knife blades
US4052801A Dredging system and methods of dredging
US3919791A Dredger having separately floating dredge and tail sections and method of dredging
US3867772A Method of excavating to form or enlarge a waterway