LandOfFree - US Patents - Listing for Telephonic communications,Supervisory or control line signaling,Signal reception at substation

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

Telephone terminal

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

Telephone terminal device

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

Telephone tuning and signaling system

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

Telephone visual signaling device

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

Telephone with call-incoming-operation limiting function and...

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

Telephone with environmentally-influenced call indicator

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

Telephone with user recorded ringing signal

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

Telephony ring customization

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

Terminal connection device

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

Terminal in communication network for notifying originating part

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

Toy type children telephone set

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

True alert indication

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

Tune master internet protocol device