Calgary
Canada
5
2020-10-22
The entities that hold a legal rights for patent applications filed by inventor HUNTER DOUGLAS ANDREW:
DOUGLAS ANDREW HUNTER from Calgary, CA has applied for patents for these inventions. The list has both pending applications and granted patents:
Pipe handler and pipe loader for a well rig
#2 | 2020-10-15Automated drilling/service rig apparatus
#3 | 2019-01-03Pipe handler and pipe loader for a well rig
#4 | 2018-12-20Vehicle support structure for a worksite
#5 | 2018-01-25Automated drilling/service rig apparatus
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