Individual holder
GRAY CHARLES E
3 granted patents·75 citations·filing 1979–1979
Individually held — no corporate assignee on record.
Technology mixE21B3
Top patents by PatentIndex Score
3 records- 0168US4275488ACombined well casing spider and elevatorGRAY CHARLES E·Filed 1979·Granted Jun 30, 1981·37 cites·13 claims
- 0263US4275487AWell casing spiderGRAY CHARLES E·Filed 1979·Granted Jun 30, 1981·32 cites·5 claims
- 0329US4279308ASurface casing stabilizer and hanger and method of employing the sameGRAY CHARLES E·Filed 1979·Granted Jul 21, 1981·6 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when GRAY CHARLES E 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 →