F23L 13/08
Operating as a roller blind
Official title: operating as a roller blind; operating as a venetian blind
F23L13/08 (Operating as a roller blind) appears on 8 US grants and 4 published applications in this corpus.
Search patents in F23L- Granted patents
- 8
- Published applications
- 4
- Assignees
- 6
- Inventors
- 15
- Latest grant
- 10 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Damper system for heater stack10 Sep 2019US 10,408,448 B2
- Damper for controlling air flow through a passage17 Aug 2004US 6,776,349 B1
- Induced draft furnace air addition method and apparatus18 Aug 1998US 5,795,148 AAir Products and Chemicals, Inc.
- Damper blade construction9 Sep 1986US 4,610,197 APhilips Industrial Components, Inc.
- Double louver damper15 Jan 1985US 4,493,342 ABachmann Industries, Inc.
Most cited
By later US patents
- Damper blade construction22US 4,610,197 APhilips Industrial Components, Inc. · 1986
- System for controlling the flow of gaseous fluids10US 4,253,492 ACombustion Engineering, Inc. · 1981
- Double louver damper9US 4,493,342 ABachmann Industries, Inc. · 1985
- Temperature compensating valve assembly4US 3,972,348 AMosser Industries, Inc. · 1976
- Pollution control device3US 4,485,841 APennsylvania Engineering Corporation · 1984