Patent information: 
  | Patent: | Design 151,798 |  
  | Patented: | November 16, 1948 |  
  | Applied: | October 15, 1947 |  
  | Title: | Design for a Hollow Glass Building Block |  
  | Description: | Design for glass block |  
  | Category: | OI |  
  | Assigned to: | Owens-Illinois Glass Co. |  
 
Patentee Information: 
Class and subclass information: 
  | Class: | D25 | BUILDING UNITS AND CONSTRUCTION ELEMENTS |  
  | Subclass: | 108 |   |  
 
Known specimens: 
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 Drawings: 
 
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