Inventor
NICKEL FRANK S
US9 patents
⚠️ This page may combine multiple inventors who share the name “NICKEL FRANK S”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHARLES MACHINE WORKS
6 patentsUS6776246B1Aug 17, 2004
Apparatus and method for simultaneously locating a fixed object and tracking a beacon
CHARLES MACHINE WORKS54 citations95
US5621325AApr 15, 1997
Avoiding ghosting artifacts during surface location of subsurface transmitters
CHARLES MACHINE WORKS104 citations95
US5425179AJun 20, 1995
Optical sensor for measuring inclination angles
CHARLES MACHINE WORKS85 citations95
US7013990B1Mar 21, 2006
Apparatus and method for simultaneously locating a fixed object and tracking a beacon
CHARLES MACHINE WORKS26 citations92
US7201236B1Apr 10, 2007
Apparatus and method for tracking multiple signal emitting objects
CHARLES MACHINE WORKS10 citations83
US7251567B2Jul 31, 2007
Electronically calibrated beacon for a horizontal directional drilling machine
CHARLES MACHINE WORKS13 citations81