E21D 15/585

By means of hydraulically operated devices for mechanical props, or hydraulic props

Official title: {by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important (hydraulic props in which the hydraulic part is important E21D15/44)}

E21D15/585 (By means of hydraulically operated devices for mechanical props, or hydraulic props) appears on 6 US grants and 5 published applications in this corpus.

Search patents in E21D

Granted patents: 6
Published applications: 5
Assignees: 6
Inventors: 23
Latest grant: 24 Nov 2020

Filings by year

E21D 15/585: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	1	0
1977	0	0
1978	0	0
1979	0	0
1980	0	0
1981	0	0
1982	1	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	0	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	0	0
2010	0	0
2011	0	0
2012	0	1
2013	0	1
2014	0	0
2015	0	0
2016	1	1
2017	0	1
2018	2	0
2019	0	0
2020	1	1

By publication year. Applications have been published since 2001.

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