Patent information:
| Patent: | Utility 2,582,442 |
| Patented: | January 15, 1952 |
| Applied: | May 19, 1945 |
| Title: | Power Wrench Mechanism for Ceramic Filter Presses |
| Description: | A motorized wrench to tighten the screw on the leaves of a clay filter press that can be moved from one press to the other. |
| Category: | Filter Press |
| Assigned to: | Lapp Insulator Co., Inc. |
Patentee Information:
| LAPP, Grover W. | Le Roy, NY |
Class and subclass information:
| Class: | 81 | TOOLS |
| Subclass: | 469 | |
| Class: | 81 | TOOLS |
| Subclass: | 57.24 | |
| Class: | 81 | TOOLS |
| Subclass: | 57.4 |
Known specimens:
| None known |
Drawings:
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