Patent information:
| Patent: | Utility 324,157 |
| Patented: | August 11, 1885 |
| Applied: | June 26, 1884 |
| Title: | Method of Forming Screw Threads on Glass |
| Description: | Threads formed in glass (plunger remains in glass during annealing) |
| Category: | Thread |
| Assigned to: |
Patentee Information:
| PENNYCUICK, James G. | Boston, MA |
Class and subclass information:
| Class: | 65 | GLASS MANUFACTURING |
| Subclass: | 69 | PROCESSES; Forming product or preform from molten glass; Initial forming of hollow product or preform in mold cavity; With annealing or tempering; |
Known specimens:
| Number: |  |
Drawings:
Page 1 |