B43L 11/041
By means of a compass
Official title: {by means of a compass}
B43L11/041 (By means of a compass) appears on 11 US grants and 3 published applications in this corpus.
Search patents in B43L- Granted patents
- 11
- Published applications
- 3
- Assignees
- 1
- Inventors
- 12
- Latest grant
- 9 Dec 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Instrument for drawing ellipse or the like9 Dec 2008US 7,461,459 B2
- Compass and ellipsograph for persons with manual limitations3 Jan 2006US 6,981,328 B2
- Ellipsograph30 Oct 2001US 6,308,426 B1
- Powered toy hand drawing device10 Aug 1999US 5,933,970 A4Kidz, Inc.
- Conic section compass16 Feb 1999US 5,870,830 A
Most cited
By later US patents