Patent information:
| Patent: | Utility 1,700,066 |
| Patented: | January 22, 1929 |
| Applied: | July 17, 1924 |
| Title: | Insulator for Radio Frequency Currents |
| Description: | Radio strain insulator made from Pyrex glass for antennas |
| Category: | Radio |
| Assigned to: | Corning Glass Works |
Patentee Information:
| MARSHALL, Albert E. | Baltimore, MD |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 137B | INSULATORS; Compositions; |
| Class: | 123 | INTERNAL-COMBUSTION ENGINES |
| Subclass: | 169P | |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 208 | INSULATORS; Link type; |
| Class: | 501 | COMPOSITIONS: CERAMIC |
| Subclass: | 65 | 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; |
Known specimens:
| Number: |  |
Drawings:
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