Ball-point pen
US4378171A · kind A · utility
8Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 18, 1980 |
| Grant date | Mar 29, 1983 |
| Priority date | — |
| Expiry date | Sep 18, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K21/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A ball-point pen, which is retractable to about half its size when not in use, includes a substantially cylindrical housing having a retractable, plastic writing cartridge body therein. A plurality of push-button actuated, spring biased gripping elements engage the plastic body to retain the body in a retracted or extended position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.