G09B 29/104
Involving the optical projection of slides, microfilm or the like
Official title: {involving the optical projection of slides, microfilm or the like}
G09B29/104 (Involving the optical projection of slides, microfilm or the like) appears on 4 US grants and 0 published applications in this corpus.
Search patents in G09B- Granted patents
- 4
- Published applications
- 0
- Assignees
- 0
- Inventors
- 4
- Latest grant
- 14 Jan 1992
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
By publication year. Applications have been published since 2001.
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