G04C 17/0025
Indicating the time optically by electric means: by flaps
Official title: {by flaps}
G04C17/0025 (Indicating the time optically by electric means: by flaps) appears on 5 US grants and 0 published applications in this corpus.
Search patents in G04C- Granted patents
- 5
- Published applications
- 0
- Assignees
- 3
- Inventors
- 7
- Latest grant
- 27 Oct 2009
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 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 | 1 | 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 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Perpetual calendar clock27 Oct 2009US 7,609,589 B1
- Perpetual calendar structure28 Dec 1993US 5,274,616 A
- Digital clock27 Nov 1979US 4,175,373 ARhythm Watch Co., Ltd.
- High accuracy timer actuating mechanism in a leaf type digital clock30 Oct 1979US 4,172,358 ACopal Company Limited
- Construction of a frame of a digital clock27 Sep 1977US 4,050,232 ACopal Company Limited
No published applications in this class yet.
Most cited
By later US patents
- Perpetual calendar structure4US 5,274,616 A1993
- Perpetual calendar clock3US 7,609,589 B12009
- Construction of a frame of a digital clock2US 4,050,232 ACopal Company Limited · 1977
- Digital clock2US 4,175,373 ARhythm Watch Co., Ltd. · 1979
- High accuracy timer actuating mechanism in a leaf type digital clock1US 4,172,358 ACopal Company Limited · 1979