Patent information:
| Patent: | Utility 1,510,521 |
| Patented: | October 7, 1924 |
| Applied: | September 16, 1916 |
| Title: | Glass |
| Description: | Boro-silicate glass |
| Category: | Boron |
| Assigned to: | |
Patentee Information:
Class and subclass information:
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 66 | CERAMIC COMPOSITIONS; Glass compositions, compositions containing glass other than those wherein glass is a bonding agent, or glass batch forming compositions; Silica containing; 40 percent - 90 percent by weight silica; And boron; And aluminum; |
Known specimens:
|