Safety device for use with portable heater

Safety device for use with portable heater

Safety device for use with portable heater

Safety device for use with portable heater

Sandwiched structure for production of heat and hydrogen gas

Self heating food receptacle

Self heating individual meal package

Self heating receptacle

Self-contained exothermic heat recoverable chemical heater

Self-contained personal warming apparatus and method of warming

Self-contained temperature-change container assemblies

Self-contained warming pad

Self-heatable container

Self-heating container

Self-heating container

Self-heating container

Self-heating container

Self-heating container

Self-heating container

Self-heating container