Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4537474 | Optical system for projection | — | 1985-08-27 |
| 4455893 | Method in producing a mould for a lens | — | 1984-06-26 |
| 4371155 | Apparatus for jogging a sheaf of papers | Johan Dahlberg, Kjell Åberg | 1983-02-01 |
| 4343538 | Projector | — | 1982-08-10 |
| 4339175 | Projection screen | — | 1982-07-13 |
| 4187571 | Manually movable binding apparatus | — | 1980-02-12 |