Book with three dimensional sculpture and self supporting core
US5967874A · kind A · utility
3Cited by
16References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/38
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An educational reading device having a core leaf of a first thickness and a plurality of secondary leaves having a thickness less than the first thickness, the secondary leaves connected to the core leaf to dispose a portion of the core leaf intermediate two secondary leaves. The device includes a three dimensional sculptured head connected to the core leaf and a foot for orienting the device in an upright orientation. The secondary leaves are connected to the core leaf to permit the secondary leaves to be opened as a book.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.