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				    							2019
				    							
				    						
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				    							Invention
				    						
				    						
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				    					Hemp shielded sliding door system and method. A sliding door system and method is used in an encl... | 
				    				
				    			
				    				
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				    							2013
				    							
				    						
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				    							Invention
				    						
				    						
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				    					Door and system providing radio frequency shielding against high-altitude electromagnetic pulse. ... | 
				    				
				    			
				    				
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				    							Invention
				    						
				    						
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				    					Wide channel knife edge door and door frame system. The present invention is a wide channel door ... | 
				    				
				    			
				    				
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				    							2010
				    							
				    						
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				    							Invention
				    						
				    						
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				    					Double panel door and double frame providing radio frequency shielding and soundproofing. Double ... | 
				    				
				    			
				    				
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				    							2008
				    							
				    						
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				    							Invention
				    						
				    						
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				    					Steel sheeting for use in room size radio frequency shielded enclosures and method for making imp... | 
				    				
				    			
				    				
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				    							1991
				    							
				    						
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				    							P/S
				    						
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				    					installation of RF shielded enclosures |