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WILLIAM J HARTWIG

Overview
  • Total Patents
    30
About

WILLIAM J HARTWIG has a total of 30 patent applications. Its first patent ever was published in 1906. It filed its patents most often in United States and Canada. Its main competitors in its focus markets electrical machinery and energy, machines and measurement are PAVESI & C SPA OFF MEC, ELMOTEC ELEKTRO MOTOREN TECH and ADVANCED MACHINE & TOOL.

Patent filings in countries

World map showing WILLIAM J HARTWIGs patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 12

Patent filings per year

Chart showing WILLIAM J HARTWIGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cullin Jasper F 22
#2 Moore William E 2
#3 Millis Charlie J 2
#4 Willie Collins Edward 1
#5 Taleen Carl G 1
#6 Taleen Carl C 1
#7 Culling Jasper F 1

Latest patents

Publication Filing date Title
US1825262A Carburetor attachment
US1479248A Machine for insulating armature windings
US1443526A Machine for securing armature windings
US1397316A Coil-winder
US1391202A Disk-stacking device
US1578562A Pole-piece-finishing machine
US1380531A Wrapping-machine
US1402217A Machine for positioning armature windings
US1375133A Armature insulation
US1479285A Armature-coil winder
US1346592A Field-coil-testing device
US1479284A Armature-winding-testing mechanism
US1356810A Device for undercutting commutator insulation
US1392557A Insulation for armatures
US1345075A Device for testing pole-windings
US1343351A Stacking-pin
US895484A Speed-measure.
US847679A Speed-measure.
CA212486A Device for undercutting commutator insulations
CA213696A Armature coil winder