B23F 21/268
Pot broaches
Official title: {Pot broaches}
B23F21/268 (Pot broaches) appears on 7 US grants and 1 published applications in this corpus.
Search patents in B23F- Granted patents
- 7
- Published applications
- 1
- Assignees
- 2
- Inventors
- 12
- Latest grant
- 28 Oct 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 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 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Calibrating tool for manufacturing parts with an outer profile28 Oct 2003US 6,637,088 B2
- Device for manufacturing parts with an outer profile13 Aug 2002US 6,430,791 B1
- Multiple stage shaving die21 Apr 1992US 5,105,697 A
- Pot broach9 Jun 1987US 4,671,709 ANational Broach & Machine Company
- Pot broach25 Jul 1978US 4,102,244 ALear Siegler, Inc.
Most cited
By later US patents