H04M 3/53

Centralised arrangements for recording incoming messages , i.e. mailbox systems

Official title: Centralised arrangements for recording incoming messages {, i.e. mailbox systems}

H04M3/53 (Centralised arrangements for recording incoming messages , i.e. mailbox systems) appears on 4,832 US grants and 3,877 published applications in this corpus.

Search patents in H04M
Granted patents
4,832
Published applications
3,877
Assignees
1,254
Inventors
7,018
Latest grant
1 Sep 2026

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H04M 3/53: granted patents and published applications per publication year
YearGranted patentsPublished applications
197630
197720
197830
197910
198010
198150
198230
198320
198450
198550
1986120
198760
1988150
1989280
1990290
1991250
1992440
1993410
1994610
1995870
1996880
1997870
19981540
19991620
20001270
200116978
2002190272
2003166234
2004192220
2005124247
2006199259
2007171271
2008135271
2009125233
2010135200
2011219152
2012256150
2013298197
2014273166
2015218147
2016181136
2017154119
201810284
201911169
20207871
20217770
20227154
20235769
20246342
20254540
20262726

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