Protector module for laminar type telephone blocks
US4980909A · kind A · utility
5Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Nov 2, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T4/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An individual telephone subscriber circuit module for use with laminar type connector blocks employing conventional three-element gas tubes of diameter greater than the thickness of an individual lamina. The module houses two gas tubes in side-by-side relation and straddles two adjacent laminae on the block to protect a pair of adjacent circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.