Search
Selected: C

Call management system

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Call notification system, method, computer program and...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Call progress decoder for multiple cadenced tones on telephone l

Telephonic communications – Supervisory or control line signaling – Signal receiver
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Call progress monitor circuitry and method for a...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Call signal detecting device

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Call transmitter for the input of control commands,...

Telephonic communications – Supervisory or control line signaling – Substation originated
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Call-routing device

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Called party response detecting apparatus

Telephonic communications – Supervisory or control line signaling – Signal receiver
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Caller controlled network-based timed ring suppression

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Caller identification interface using line reversal detection

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Caller-identification receiving apparatus

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Canonical telephone numbers

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Capacitively coupled ring detector with power provided...

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Card system

Telephonic communications – Supervisory or control line signaling – Substation originated
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Card-like device having a microprocessor and speaker for communi

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

CAS tone disguising method and apparatus

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Cellular car telephone dialing controller

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Central office filter system and method

Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Circuit and method for automatic memory dialing

Telephonic communications – Supervisory or control line signaling – Substation originated
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Circuit and method for automatically cutting off a speech path a

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0
  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.