Helically grooved foamed football
US4772020A · kind A · utility
49Cited by
3References
4Claims
0Family size
Inventor
Key dates
| Filing date | Nov 16, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Nov 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S273/20
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An elastic foam football 10 with lengthwise spiral grooves 20 increasing in width and depth towards the middle of the ball for improved handling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.