Assignee
HARRISON WESTERN CORP
US·5 granted patents·200 citations·filing 1983–1984
Technology mixE21D5
Top patents by PatentIndex Score
5 records- 0197US4494799ATunnel boring machineHARRISON WESTERN CORP·Filed 1983·Granted Jan 22, 1985·60 cites·39 claims
- 0296US4486050ARectangular tunnel boring machine and methodHARRISON WESTERN CORP·Filed 1983·Granted Dec 4, 1984·53 cites·44 claims
- 0391US4494617AShaft boring machineHARRISON WESTERN CORP·Filed 1983·Granted Jan 22, 1985·39 cites·96 claims
- 0484US4637657ATunnel boring machineHARRISON WESTERN CORP·Filed 1984·Granted Jan 20, 1987·28 cites·18 claims
- 0576US4527837ATunnel boring machineHARRISON WESTERN CORP·Filed 1983·Granted Jul 9, 1985·20 cites·10 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →