Hand held desoldering instrument

Hand held powder-fed laser fusion welding torch

Handle for welding gun and system using same

Hard facing of metal substrates using vc-cr.sub.3 c.sub.2

Hard surfaced plate

Hard surfacing for oil well tools

Hard-facing alloys having improved crack resistance

Hard-facing alloys having improved crack resistance

Hardfaced member and method of attaching hardfacing element...

Hardsurfacing welding wire and process

Heat exchanger and method of assembly thereof

Heat exchanger and method of assembly thereof

Heat resistant crack resistant ductile weld deposit

Heat sink welding and purging apparatus

Heat treatable steel weld deposit

Heat treating assembly and method

Heater bar assembly

Heater straps

Heater wire and control therefor

Heating apparatus for a welding operation and method therefor