H04M 1/72508

Using a control channel

Official title: using a control channel

H04M1/72508 (Using a control channel) appears on 38 US grants and 5 published applications in this corpus.

Search patents in H04M
Granted patents
38
Published applications
5
Assignees
22
Inventors
69
Latest grant
25 Sep 2018

Filings by year

H04M 1/72508: granted patents and published applications per publication year
YearGranted patentsPublished applications
197910
198000
198100
198200
198300
198400
198500
198600
198710
198810
198930
199040
199110
199240
199310
199420
199510
199610
199730
199810
199920
200020
200110
200211
200320
200410
200520
200601
200700
200800
200901
201000
201100
201201
201300
201400
201510
201601
201710
201810

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents