G04B 19/21
Drums
Official title: Drums {(drum-shaped or spatial indicating devices G04B19/04; fixed scales or dials G04B19/06; scales disposed on a terrestrial globe for indicating local times in different places G04B19/22; clockwork combined with a lamp with no functional relationship G04B47/02)}
G04B19/21 (Drums) appears on 41 US grants and 22 published applications in this corpus.
Search patents in G04B- Granted patents
- 41
- Published applications
- 22
- Assignees
- 27
- Inventors
- 72
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 2 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 0 |
| 2025 | 3 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Inner roller, time display structure and timepiece18 Aug 2026US 12,710,726 B2
- Horological display mechanism with separate displays4 Nov 2025US 12,461,490 B2Harry Winston SA
- Horological display mechanism with separate displays4 Nov 2025US 12,461,491 B2Harry Winston SA
- Timer22 Jul 2025US 12,366,832 B1Shenzhen Weike Brand Management Ltd.
- Roller jumping timepiece display mechanism28 May 2024US 11,994,829 B2Omega SA
- Adjustment system for a display mechanism26 Jun 2025US 2025/0208569 A1Montres Breguet S. A.
- Position-setting and marking device for a timepiece mechanism19 Jun 2025US 2025/0199473 A1Montres Breguet S. A.
- Display device comprising a mechanism for coupling to a watch movement29 May 2025US 2025/0172911 A1Montres Breguet S. A.
- Inner roller, time display structure and timepiece1 May 2025US 2025/0138482 A1
- Horological display mechanism10 Apr 2025US 2025/0116968 A1Montres Breguet S. A.
Most cited
By later US patents
- Digital display with stepping device45US 3,950,939 ADiehl GmbH & Co. · 1976
- Transfigurating timepieces13US 4,858,209 A1989
- Animated timepiece11US 6,754,139 B2Timefoundry, LLC · 2004
- Watch with rotating conical bands and with removable objects9US 6,891,778 B1Zadora Timepieces, LLC · 2005
- Rolling clock device8US 4,912,586 AImagin It Marketing, Inc. · 1990