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A47B 13/023

With a central column

Official title: {with a central column}

A47B13/023 (With a central column) appears on 204 US grants and 194 published applications in this corpus.

Search patents in A47B

Granted patents: 204
Published applications: 194
Assignees: 118
Inventors: 382
Latest grant: 29 Sep 2026

Filings by year

A47B 13/023: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	2	0
1977	2	0
1978	3	0
1979	1	0
1980	1	0
1981	0	0
1982	1	0
1983	0	0
1984	2	0
1985	1	0
1986	0	0
1987	4	0
1988	7	0
1989	5	0
1990	2	0
1991	3	0
1992	3	0
1993	1	0
1994	3	0
1995	2	0
1996	3	0
1997	2	0
1998	2	0
1999	2	0
2000	2	0
2001	1	1
2002	4	2
2003	1	10
2004	4	4
2005	4	3
2006	0	7
2007	0	3
2008	0	10
2009	0	4
2010	4	1
2011	5	3
2012	5	5
2013	2	2
2014	6	6
2015	3	7
2016	6	15
2017	12	14
2018	12	8
2019	12	12
2020	14	17
2021	14	14
2022	10	10
2023	8	16
2024	11	9
2025	8	8
2026	4	3

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

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