Assignee
CAMPBELL IND LTD
CA·3 granted patents·66 citations·filing 1995–1998
Top patents by PatentIndex Score
3 records- 0154US6026898AIntegral tubing head and rotatorCAMPBELL IND LTD·Filed 1997·Granted Feb 22, 2000·35 cites·33 claims
- 0238US5653290ARotating rod string position adjusting deviceCAMPBELL IND LTD·Filed 1995·Granted Aug 5, 1997·17 cites·30 claims
- 0336US6095241ACoupling device for a drive assemblyCAMPBELL IND LTD·Filed 1998·Granted Aug 1, 2000·14 cites·19 claims
Join the waitlist — get patent alerts
Get an alert when CAMPBELL IND LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →