Patent information:
| Patent: | Utility 2,738,838 |
| Patented: | March 20, 1956 |
| Applied: | June 4, 1952 |
| Title: | Glass Block Ventiliating Device |
| Description: | Operable glass block vent |
| Category: | OI |
| Assigned to: | Owens-Illinois Glass Co. |
Patentee Information:
| SUTTER, John H. | Norcross, GA |
Class and subclass information:
| Class: | 160 | FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL |
| Subclass: | 95 | |
| Class: | 49 | MOVABLE OR REMOVABLE CLOSURES |
| Subclass: | 53 | |
| Class: | 49 | MOVABLE OR REMOVABLE CLOSURES |
| Subclass: | 347 | |
| Class: | 49 | MOVABLE OR REMOVABLE CLOSURES |
| Subclass: | 490.1 | |
| Class: | 49 | MOVABLE OR REMOVABLE CLOSURES |
| Subclass: | 496.1 | |
| Class: | 454 | VENTILATION |
| Subclass: | 276 |
Known specimens:
| None known |
Drawings:
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