B44B 3/068
Tracer heads
Official title: {Tracer heads (B44B3/004 takes precedence)}
B44B3/068 (Tracer heads) appears on 2 US grants and 0 published applications in this corpus.
Search patents in B44B- Granted patents
- 2
- Published applications
- 0
- Assignees
- 0
- Inventors
- 2
- Latest grant
- 24 Nov 1992
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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.
Recent patents
No published applications in this class yet.
Most cited
By later US patents