G03B 27/56
Mounting enlarger head on column
Official title: Mounting enlarger head on column {; Mounting reproduction camera on column}
G03B27/56 (Mounting enlarger head on column) appears on 7 US grants and 2 published applications in this corpus.
Search patents in G03B- Granted patents
- 7
- Published applications
- 2
- Assignees
- 8
- Inventors
- 11
- Latest grant
- 20 Dec 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 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 | 0 | 0 |
| 1994 | 1 | 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 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Screen and projection system for reducing effects of ambient light20 Dec 2011US 8,081,379 B2Seiko Epson Corporation
- Lens loading apparatus12 Jul 1994US 5,329,337 AFuji Photo Film Co., Ltd.
- Support arrangement for track mounted cameras, projectors and camera/projectors25 Sep 1984US 4,473,291 AOpti-Copy, Inc.
- Alignment structure21 Feb 1984US 4,432,638 ABerkey Photo, Inc.
- Adjustment device for photographic enlarging or reproducing apparatus27 Jun 1978US 4,097,144 ARollei-Werke Franke & Heidecke
Most cited
By later US patents
- Anti-backlash means for adjusting enlargers20US 4,066,356 AVivitar Corporation · 1978
- Support arrangement for track mounted cameras, projectors and camera/projectors5US 4,473,291 AOpti-Copy, Inc. · 1984
- Adjustment device for photographic enlarging or reproducing apparatus2US 4,097,144 ARollei-Werke Franke & Heidecke · 1978
- Alignment structure2US 4,432,638 ABerkey Photo, Inc. · 1984
- Lens loading apparatus2US 5,329,337 AFuji Photo Film Co., Ltd. · 1994