B42F 13/28
In two staggered sections
Official title: in two staggered sections
B42F13/28 (In two staggered sections) appears on 7 US grants and 1 published applications in this corpus.
Search patents in B42F- Granted patents
- 7
- Published applications
- 1
- Assignees
- 6
- Inventors
- 10
- Latest grant
- 30 Nov 1993
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 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 | 0 | 0 |
| 1993 | 2 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Swivel lock assembly for use in ringbinders and the like30 Nov 1993US 5,265,967 AU.S. Ringbinder Corp.
- Binding system19 Jan 1993US 5,180,246 A
- Loose-leaf binder16 Sep 1980US 4,222,679 AAmerican Loose Leaf Corp.
- Binder25 Sep 1979US 4,168,920 AKing Jim Co., Ltd.
- Movable hinge binder28 Nov 1978US 4,127,340 AAmerican Loose Leaf Corp.
Most cited
By later US patents
- Movable hinge binder62US 4,127,340 AAmerican Loose Leaf Corp. · 1978
- Loose-leaf binder25US 4,222,679 AAmerican Loose Leaf Corp. · 1980
- Swivel lock assembly for use in ringbinders and the like9US 5,265,967 AU.S. Ringbinder Corp. · 1993
- Loose leaf binder8US 3,944,374 ASwingline Inc. · 1976
- Loose leaf binder5US 4,011,018 ARoyal Business Machines, Inc. · 1977