H04M 2215/92

Autonomous calculations of charges in terminal, i.e. meter not controlled from exchange

H04M2215/92 (Autonomous calculations of charges in terminal, i.e. meter not controlled from exchange) appears on 75 US grants and 55 published applications in this corpus.

Search patents in H04M
Granted patents
75
Published applications
55
Assignees
48
Inventors
173
Latest grant
12 May 2015

Filings by year

H04M 2215/92: granted patents and published applications per publication year
YearGranted patentsPublished applications
197810
197900
198000
198100
198200
198300
198400
198500
198600
198700
198800
198900
199000
199110
199210
199310
199410
199500
199630
199720
199840
199920
200020
200191
200298
2003917
2004311
200525
200634
200753
200851
200933
201041
201101
201220
201310
201410
201510

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents