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US5577648A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1992 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Dec 7, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45F3/047
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A backpack including a body engaging strap assembly and a strap assembly supported element supported on the body engaging strap assembly and including a container and an integrally formed back engaging portion having a padded back facing surface and a generally rigid curved opposite surface fixed thereto, the integrally formed back engaging portion defining a first generally vertically extending curve arranged to be centered adjacent the upper back portion of a user and a second generally horizontally extending curve arranged to be centered adjacent the lower back portion, the integrally formed back engaging portion being bendable about a horizontal axis located adjacent the center of the first curve and about a vertical axis located adjacent the center of the second curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.