Assignee

HALL JAMES D

US·2 granted patents·19 citations·filing 1979–2011

Technology mixE21B1 E21D1

Top patents by PatentIndex Score

2 records

0166US8757934B2Fully grouted cable boltHALL JAMES D·Filed 2011·Granted Jun 24, 2014·4 cites·21 claims
0248US4250973ARock drilling apparatusHALL JAMES D·Filed 1979·Granted Feb 17, 1981·15 cites·3 claims

Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →