B43L 13/08
Protractor heads
B43L13/08 (Protractor heads) appears on 32 US grants and 1 published applications in this corpus.
Search patents in B43L- Granted patents
- 32
- Published applications
- 1
- Assignees
- 9
- Inventors
- 37
- Latest grant
- 29 Jun 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- All-in-one drawing apparatus29 Jun 1999US 5,915,807 A
- Double-sided miter box for machine tools in particular panel saws22 Oct 1996US 5,566,603 A
- Protractor with a rotor25 Apr 1995US 5,408,753 A
- Drafting head for a drafting machine9 Mar 1993US 5,191,715 AFranz Kuhlmann Prazisions-Mechanic und Mashinenbau GmbH & Co. K.G.
- Head of universal parallel ruler1 Sep 1992US 5,142,789 AMutoh Industries Ltd.
Most cited
By later US patents
- All-in-one drawing apparatus18US 5,915,807 A1999
- Numerically or manually controlled moving carriage drafting machine9US 4,738,029 A1988
- Protractor with a rotor9US 5,408,753 A1995
- Draughting tables, drawing boards, drawing instruments and analogous apparatus8US 4,934,061 A1990
- Universal parallel ruler device7US 4,151,649 AMutoh Industry Ltd. · 1979