Inventor

WALTON JOHN N

GB5 patents

Patents

5 patents

US5032048AJul 16, 1991

Quick-fastening nut

HEDLEY PURVIS LTD47 citations91

US4998453AMar 12, 1991

Hydraulic bolt tensioner

HEDLEY PURVIS LTD51 citations91

US4854197AAug 8, 1989

Torque wrenches

HEDLEY PURVIS LTD21 citations79

US5142951ASep 1, 1992

Torque wrench

HEDLEY PURVIS LTD18 citations71

US4982626AJan 8, 1991

Hydraulic torque wrench

HEDLEY PURVIS LTD16 citations68