Patent information: 
  | Patent: | Utility 2,857,505 |  
  | Patented: | October 21, 1958 |  
  | Applied: | April 19, 1955 |  
  | Title: | Method of welding TV tube studs |  
  | Description: | Stud Welding Apparatus |  
  | Category: | OI |  
  | Assigned to: | Owens-Illinois Glass Co. |  
 
Patentee Information: 
Class and subclass information: 
  | Class: | 219 | ELECTRIC HEATING |  
  | Subclass: | 98 |   |  
 
Known specimens: 
 | 
	
 Drawings: 
 |