LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Terminal – Housing or housing component

Key assembly

Telephonic communications – Supervisory or control line signaling – Substation originated

Key input device

Telephonic communications – Supervisory or control line signaling – Substation originated

Key input device

Telephonic communications – Terminal accessory or auxiliary equipment – Attachable to terminal housing

Key marking overlay for alphanumeric keypads

Telephonic communications – Multi-line or key substation system with selective switching...

Key telephone apparatus

Telephonic communications – Multi-line or key substation system with selective switching... – With intercom system

Key telephone apparatus

Telephonic communications – Multi-line or key substation system with selective switching... – With special service

Key telephone apparatus

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature

Key telephone apparatus with [automatic] call...

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature

Key telephone apparatus with automatic call distribution functio

Telephonic communications – Multi-line or key substation system with selective switching...

Key telephone apparatus with call distribution function

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature

Key telephone apparatus with call distribution function

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature

Key telephone interface

Telephonic communications – Multi-line or key substation system with selective switching... – With special service

Key telephone management system

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature

Key telephone system

Telephonic communications – Multi-line or key substation system with selective switching...

Key telephone system

Telephonic communications – Multi-line or key substation system with selective switching... – Line status indication or call alerting

Key telephone system

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Key telephone system

Telephonic communications – Multi-line or key substation system with selective switching...

Key telephone system

Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature

Key telephone system