|7257927||Three-piece frame assembly for window of enclosure|
Frames are disclosed for mounting windows within the walls of enclosures for isolating or sealing substances such as radioactive or other hazardous substances from the surrounding environment. In a first embodiment of the present invention, a window assembly include...
|6289834||Rain and sun shielding collapsible ventilator|
A portable collapsible ventilator that is used to direct air currents into a boat hatch, recreational vehicle vent, or other opening in an enclosed space while, at the same time shielding that opening from the intrusion of rain and direct sunlight. The ve...