Writing machines
US4003459A · kind A · utility
4Cited by
9References
2Claims
0Family size
Inventor
Key dates
| Filing date | Nov 26, 1974 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | Nov 26, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/49
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A key operated manual writing machine including a writing instrument which inscribes letters on the paper, the instrument being controlled by pairs of cams, each pair coupled to one of the manual keys. The two cams control movements of the pen or instrument in two directions x and y at right-angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.