Artificial heart valve
Artificial heart valve
Automated clean-out system for film processors
Automatic anti-oxidation replenisher control
Automatic energy saving vent system for air conditioning systems
Automatic inverse fix replenisher control
Automatic liquid feed and circulation system for a photographic
Automatic obturator for a gasodynamic ventilation device
Automatic processing machine for photography
Automatic processor
Automatic replenisher control system
Automatic replenisher system for a photographic processor
Auxiliary ventilation system for underground sites
Axisymmetric fluidic throttling flow controller