Disposable cardboard plates
US3938727A · kind A · utility
64Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Aug 5, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47G19/03
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A disposable cardboard plate having an origamically corrugated brim including ridges and intervening grooves. The plate has been pressed from a flat cardboard blank to form inclined end walls at the outer ends of the grooves between the ends of adjacent ridges, and a flat edge flange extending continuously around the plate to lock the corrugations in their predetermined configuration, together with said end walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.