The Patent Finder

Lag Steering Systems

Also on record
Records under this name other than patents Lag Steering Systems holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

Showing 1 to 5 of 5 · Back to Lag Steering Systems

PatentTitleStatus Expires Confidence
US 5,099,927Apparatus for guiding and steering earth boring casing
Term ended
Term ended no later than Mar 31, 2012 · Low confidence
Term endedTerm ended no later than Mar 31, 2012Low confidence
US 5,133,418Directional drilling system with eccentric mounted motor and biaxial sensor and method
Term ended
Term ended no later than Jul 28, 2012 · Low confidence
Term endedTerm ended no later than Jul 28, 2012Low confidence
US 5,163,520Apparatus and method for steering a pipe jacking head
Term ended
Term ended no later than Nov 17, 2012 · Low confidence
Term endedTerm ended no later than Nov 17, 2012Low confidence
US 5,203,418Apparatus for guiding and steering earth boring casing
Term ended
Term ended no later than Apr 20, 2013 · Low confidence
Term endedTerm ended no later than Apr 20, 2013Low confidence
US 5,361,854Laser positioning system for earth boring apparatus
Term ended
Term ended no later than Nov 8, 2014 · Low confidence
Term endedTerm ended no later than Nov 8, 2014Low confidence
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited