H04N 21/6137

Involving transmission via a telephone network

Official title: {involving transmission via a telephone network, e.g. POTS}

H04N21/6137 (Involving transmission via a telephone network) appears on 261 US grants and 274 published applications in this corpus.

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Granted patents
261
Published applications
274
Assignees
112
Inventors
335
Latest grant
19 May 2026

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H04N 21/6137: granted patents and published applications per publication year
YearGranted patentsPublished applications
198910
199010
199100
199200
199300
199410
199530
199620
199760
199830
199980
200070
2001142
2002921
2003146
200438
200518
200654
2007662
20082340
20091724
2010115
2011167
2012158
2013105
20141118
20151810
2016109
20171310
201875
201954
202042
202169
202223
202352
202421
202511
202610

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

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