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name:-0.0014219284057617
name:-0.01491904258728
name:-0.00096797943115234
Hemphill; Dean P. Patent Filings

Hemphill; Dean P.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hemphill; Dean P..The latest application filed is for "underwater trencher with pipelaying guide".

Company Profile
0.5.0
  • Hemphill; Dean P. - Houston TX
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Underwater trencher with pipelaying guide
Grant 4,575,280 - Hemphill , et al. March 11, 1
1986-03-11
Method and apparatus for on surface joining of submarine pipeline segments using an eccentric hinge
Grant 4,493,590 - Ayers , et al. January 15, 1
1985-01-15
Method for sensing and remotely controlling a tool to workpiece spatial relationship
Grant 4,438,754 - Nanny , et al. March 27, 1
1984-03-27
Oil spill cleanup method and apparatus
Grant 3,959,136 - Ayers , et al. May 25, 1
1976-05-25
Oil Spill Cleanup
Grant 3,865,730 - Ayers , et al. February 11, 1
1975-02-11

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