Thawing assembly for clogged asphalt pipes
US4239486A · kind A · utility
9Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | Apr 27, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Apr 27, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L53/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A heat applying assembly for thawing out clogged asphalt containing pipes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.