Patent information:
| Patent: | Utility 108,408 |
| Patented: | October 18, 1870 |
| Applied: | |
| Title: | Improvement in Cutting and Engraving Stone, Metal, Glass &c. |
| Description: | Method of sandblashing to cut or engrave |
| Category: | Engraving |
| Assigned to: |
Patentee Information:
| TILGHMAN, Benjamin C. | Philadelphia, PA |
Class and subclass information:
| Class: | 451 | ABRADING |
| Subclass: | 91 | |
| Class: | 125 | STONE WORKING |
| Subclass: | 2 | |
| Class: | 451 | ABRADING |
| Subclass: | 102 | |
| Class: | 451 | ABRADING |
| Subclass: | 40 | |
| Class: | 51 | ABRASIVE TOOL MAKING PROCESS, MATERIAL, OR COMPOSITION |
| Subclass: | 309 |
Known specimens:
| None known |
Drawings:
Page 1 |