E01F 9/677
The sign posts being removable without tools
Official title: the sign posts being removable without tools, e.g. of stud-and-socket type
E01F9/677 (The sign posts being removable without tools) appears on 31 US grants and 27 published applications in this corpus.
Search patents in E01F- Granted patents
- 31
- Published applications
- 27
- Assignees
- 19
- Inventors
- 55
- Latest grant
- 22 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 4 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 4 |
| 2016 | 1 | 2 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 4 |
| 2020 | 2 | 1 |
| 2021 | 2 | 3 |
| 2022 | 0 | 3 |
| 2023 | 0 | 0 |
| 2024 | 2 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Traffic delineator63US 4,240,766 A1980
- Marker post system55US 4,649,678 A1987
- Self-erecting roadway marking post46US 4,522,530 A1985
- Decorative border fence system35US 4,787,601 AMarkers, Inc. · 1988
- Separable magnetic attachment assembly33US 6,739,567 B1Pacific Cascade Parking Equipment Corporation · 2004