The Fotoliptophone

Refrigerating with air

Refrigeration Networks

N-wheeled cars

Paris Clock Network

The Paris Compressed-Air Network

Vienna Clock Network

Hydraulic Microphones

Wood-gas Powered Cars Turbine-driven Paddleboats

Coal-Gas Powered Motorcycles

Armoured Motorcycles

Motorised sack-barrows

Coal-Gas Powered Cars

Hail cannon

Unusual Tanks

N-Person Bicycles

Pneumatic machine guns