H04M 3/50

Centralised arrangements for answering calls

Official title: Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers (H04M3/487 takes precedence; centralised dictation systems H04M11/10); {Centralised arrangements for recording messages}

H04M3/50 (Centralised arrangements for answering calls) appears on 14,200 US grants and 12,189 published applications in this corpus.

Search patents in H04M
Granted patents
14,200
Published applications
12,189
Assignees
2,707
Inventors
18,978
Latest grant
6 Oct 2026

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H04M 3/50: granted patents and published applications per publication year
YearGranted patentsPublished applications
197690
197780
197890
197940
198050
198180
198260
198350
1984130
1985130
1986210
1987170
1988280
1989460
1990580
1991570
1992650
1993750
19941010
19951350
19961600
19971350
19982380
19993000
20002390
2001304129
2002346447
2003304451
2004374428
2005265525
2006379528
2007309533
2008264541
2009248520
2010331448
2011447354
2012609402
2013713524
2014793633
2015717605
2016680582
2017703516
2018644482
2019702461
2020643504
2021558639
2022537458
2023561494
2024439366
2025390352
2026185267

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

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