Patent information:
| Patent: | Utility 1,424,924 |
| Patented: | August 8, 1922 |
| Applied: | August 27, 1919 |
| Title: | Method of Producing Clay Bodies |
| Description: | Vacuum process for removing air from the clay. Patent was owned by Lapp Insulator Co. |
| Category: | Vacuum |
| Assigned to: |
Patentee Information:
| LAPP, Grover W. | Le Roy, NY |
Class and subclass information:
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 349 | MISCELLANEOUS; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 87 | REMOVAL OF LIQUID COMPONENT OR CARRIER THROUGH POROUS MOLD SURFACE; By direct application of vacuum or pneumatic pressure; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | 102 | VACUUM TREATMENT OF WORK; To degas or prevent gas entrapment; |
| Class: | 264 | PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES |
| Subclass: | DIG39 | Treatment of clay before and after molding; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |
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