Patent information:
| Patent: | Utility 1,561,002 |
| Patented: | November 10, 1925 |
| Applied: | August 27, 1919 |
| Title: | Method of Producing Clay Bodies and Apparatus Used |
| Description: | Vacuum process for removing air from the clay |
| Category: | Vacuum |
| Assigned to: | Lapp Insulator Co., Inc. |
Patentee Information:
| LAPP, Grover W. | Le Roy, NY |
Class and subclass information:
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 149 | CERAMIC COMPOSITIONS; Clay containing (e.g., porcelain, earthenware, etc.); Clay pretreatment; Water pretreatment; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 349 | MISCELLANEOUS; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | DIG39 | Treatment of clay before and after molding; |
Known specimens:
| None known |
Drawings:
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