Method and system for purification of water for greenhouse structures
US4996791A
Method and structure for improved natural lighting for plant growth
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Seedling propagation assembly
CA1317762C
Method and structure for improved natural lighting for plant growth
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Heater system for greenhouses
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System for supporting growing plants
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Method and structure for environmental control of plant growth
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Greenhouse structure
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Cooling system for greenhouse structures
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Aeration assembly for a nutrient feed solution for a nutrient film propagation system for plants
DE2844152A1
Building stressed membrane enclosing structure - by power jack tensioning fabric strips on transverse arch frames with slide pads
DE2844151A1
Building structure including frame members and stressed membrane cover - has frame members of I=beam section extruded aluminium alloy with attached fabric capturing device
SE7810524L
Constructions
SE7810525L
A space enclosed by a membrane which has been tensioned over a carrying construction