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LAWRENCE IRWIN F

Overview
  • Total Patents
    59
About

LAWRENCE IRWIN F has a total of 59 patent applications. Its first patent ever was published in 1967. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets civil engineering, chemical engineering and mechanical elements are LAWRENCE IRWIN, OSBORN WILLIAM D and LEWISAN PRODUCTS INC.

Patent filings in countries

World map showing LAWRENCE IRWIN Fs patent filings in countries

Patent filings per year

Chart showing LAWRENCE IRWIN Fs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Irwin Lawrence F 41
#2 Irwin Lawrence Fitzpatrick 13
#3 Millray Robert 3
#4 Hunt Robert G 1
#5 Irwin Frank R 1
#6 Mier Mark F 1
#7 Lawrence Fitzpatrick Irwin 1
#8 Ehrler Fritz O 1

Latest patents

Publication Filing date Title
WO9903606A1 Waste line inspection and clean out device with water jet head
US5265301A Drain cleaning apparatus
US5239708A Pneumatic waste line clean-out tool
US5193242A Wasteline cleanout apparatus
DE3929910A1 HAND STAMPING DEVICE
US4942873A Resuscitation device
US4816957A Ground line fault interrupter adapter unit
US4716613A Pipe cleaning machine
US4686732A Waste line cleanout apparatus
US4611360A Pipe cleaning machine
US4542543A Impact device
US4580306A Waste line cleanout apparatus
US4496811A Foot switch safety enclosure
DE3243970A1 POCKET STAMP
US4508468A Locking coupling
US4361924A Grip handle chuck
US4364140A Pipe cleanout tool
US4395791A Spring feeding mechanism
US4452108A Ratcheting pipe wrench
DE2940179A1 Pipe wrench made in two main parts - has jaw with rack on shaft part guided in sleeve of pinion-carrying lever part