G01D 15/22
Chopper bars for bringing recording element into contact with recording surface
G01D15/22 (Chopper bars for bringing recording element into contact with recording surface) appears on 29 US grants and 0 published applications in this corpus.
Search patents in G01D- Granted patents
- 29
- Published applications
- 0
- Assignees
- 23
- Inventors
- 55
- Latest grant
- 26 Jul 1994
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus for raising and lowering plotter marking devices26 Jul 1994US 5,333,005 ASummagraphics Corporation
- Plotter platen mapping system3 Oct 1989US 4,872,023 ASanders Associates, Inc.
- Write head for a drawing machine having a deformable mounting for a writing member5 Sep 1989US 4,862,592 ASchlumberger Industries
- Plotter head control device1 Aug 1989US 4,853,715 ANumonics Corporation
- Plotter pen up/down control system18 Oct 1988US 4,777,727 ASanders Associates, Inc.
No published applications in this class yet.
Most cited
By later US patents
- Drawing machine having automatically replaced writing members and apparatus therefor66US 4,683,476 ABenson, Inc. · 1987
- Pen holding device for an automatic drafting device24US 4,157,552 AKabushiki Kaisha Daini Seikosha · 1979
- Recording apparatus with intermittent power usage17US 4,160,255 AMitogiken, Ltd. · 1979
- Marking instrument actuator for plotting apparatus or the like15US 4,426,783 AGerber Garment Technology, Inc. · 1984
- Plotter head control device15US 4,853,715 ANumonics Corporation · 1989