Vent pipe cap
US4399743A · kind A · utility
27Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Oct 15, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23L17/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A cap for vent stack pipes of a plurality of sizes which is provided with practical connector means to prevent vandelism or removal of the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.