Patent information:
| Patent: | Utility 306,147 |
| Patented: | October 7, 1884 |
| Applied: | April 28, 1884 |
| Title: | Press for Molding Glass Insulators |
| Description: | Press for making threads with removable thread forming mandrel |
| Category: | Press |
| Assigned to: |
Patentee Information:
| GRAY, Lawrence B. | Boston, MA |
| HAM, Joseph | Boston, MA |
Class and subclass information:
| Class: | 65 | GLASS MANUFACTURING |
| Subclass: | 362 | PLUNGER; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |
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