Particulate energy absorber

Particulate material powered prime mover

Peak power generation

Pedal generator

Pedal generator

Pedal operated power generating system

Permanent magnet energy storage apparatus

Permanent magnet energy storage apparatus

Permanent magnet generator for bicycle light operation

Phase change assisted heat sink

Phase change on demand integrated pressure pump and power plant

Phase change on demand integrated pressure pump and power plant

Physical energy-converting rotor, rotating method of the...

Plant for generating and accumulating electric energy with the a

Pneumatic human power conversion system based on children's...

Pocket safety hand-making electric power and rechargeable...

Pocket safety hand-making electric power and rechargeable...

Pollution-free power generating and peak power load shaving syst

Portable battery charger powered by internal combustion engine

Portable DC power generator with constant voltage