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| Number | Title | Issue Date |
| 4435623 | Telephone guard device A device for guarding a telephone set against undesired use or accidental dislocation is fixably mounted between the cradles and has blades and a slide mechanism which is manually actuable to selectively extend and retract the blades into and out of block... | 03/06/1984 |
| 4404435 | Telephone lock A lock for securing a telephone instrument against unauthorized use includes a key-operated cylinder extending through a wall of the housing of the telephone instrument and including a cam movable between locked and unlocked positions for engaging the lin... | 09/13/1983 |
| 4396810 | Pushbutton telephone dial locks A keyboard lock mechanism is disclosed herein for preventing all or some of the keys or pushbuttons on a telephone from being depressed which includes a mounting plate attached detachably or permanently to the body or case of the telephone and having a ce... | 08/02/1983 |
| 4360714 | Telephone moveable cradle lock A locking device for telecommunications transceivers includes a key operated lock cylinder contained in a frame designed to fit between a transceiver's side mounted cradle and the opposed side of the transceiver's base, a latch bar attached to the lock cy... | 11/23/1982 |
| 4335279 | Mechanical telephone conversation time limiting device To prevent unauthorized or prolonged telephone conversations, a limiting device is attachable to an ordinary telephone set by means of a padlock means with removable key. The device comprises a timer which can be set only when one of the shut-off pushbutt... | 06/15/1982 |
| 4323739 | Telephone locking device A telephone locking device for preventing unauthorized use of a push-button type telephone includes a shield covering at least one of the dial push-buttons to prevent unauthorized access to that push-button. The shield is held on the telephone by either a... | 04/06/1982 |
| 4311883 | Modular telephone jack lock A lock designed specifically to lock up a plug-in socket of a modular type telephone; the lock including a jack that snap locks into the socket, a key-operated bolt for unlocking the jack therefrom, and an integral clamp for selectively clamping around th... | 01/19/1982 |
| 4304971 | Push-button telephone locking device A telephone locking device for preventing unauthorized use of a push-button type telephone includes a shield covering at least one of the dial push-buttons to prevent unauthorized access to that push-button. The shield is held on the telephone by a push-b... | 12/08/1981 |
| 4297539 | Telephone security attachment A security attachment removably locked to a telephone instrument base without interfering with the use of the hand-set, and comprised of an integral construction adapted to be hooked to spaced front and cradle features of the base and having a planar port... | 10/27/1981 |
| 4204097 | Lockable covering apparatus for telephone dials A telephone cover utilizes a unitary cover apparatus adapted to cover portions of the telephone base including the exposed dialing and telephone line selecting devices thereof. An opening in the housing is covered with a slidable element which may be sele... | 05/20/1980 |
| 4196319 | Vehicular telephone station set security pedestal A dual position mount is disclosed for mobile radio telephone sets. The base (11) of the mount is hollow and has an access port (28). The interior position (29) of the base serves as a secure receptacle for the mobile radio control unit when it is not bei... | 04/01/1980 |
| 4153823 | Telephone lock A telephone lock having a base portion configured for being received within the finger grip cavity of the telephone base, the lock having a portion hinged to the base portion, the hinged portion encircling the handset, the hinged portion having a free end... | 05/08/1979 |
| 4131769 | Telephone lock A telephone lock for use in conjunction with Trimline or similar telephones to preclude access to the dialing mechanism thereof thereby preventing unauthorized calls. The lock includes a housing adapted to cover the dialing mechanism of the phone, a plura... | 12/26/1978 |
| 4081630 | Telephone disabling device A telephone disabling device for preventing outgoing calls while permitting a two-way conversation includes a disabling member having a cover portion extending over the dialing device. The member is hooked under a forward part of the telephone and the rea... | 03/28/1978 |
| 4057697 | Telephone dial lock A telephone dial lock assembly including a shield plate, shackle and lock covers and immobilizes the dial of a trimline telephone instrument to render the telephone dialing mechanism inoperable for making outgoing calls. No interference is presented to th... | 11/08/1977 |
| 4032727 | Releasably locked mounting assembly for telephone dials Telephone dial mounting assemblies are disclosed wherein a uniquely constructed pair of resilient mounting elements, such as in the form of spring clips with bifurcated U-shaped leg sections, are secured to and interposed between the dial and associated s... | 06/28/1977 |
| 4028508 | Telephone lock A locking device is provided for use in preventing the unauthorized use of telephones of the type having a handset and a base wherein the calling element is contained on the inner surface of the headset. The device includes a fixed engaging element attach... | 06/07/1977 |
| 4005279 | Lockable cover for push button telephones A lockable cover for push button telephones to prevent the unauthorized making of outgoing telephone calls consisting of a base member attachable to the underside of the telephone and a cover member having a raised portion to cover the push buttons of the... | 01/25/1977 |
| 3965310 | Apparatus for limiting access to telephone dialing area An apparatus for limiting access to the dialing area of a telephone consists of a frame positioned around the dialing area and is firmly clamped in place. A shield is attached to one side of the frame by means of hinges and may be secured to the opposite ... | 06/22/1976 |
| 3939678 | Telephone locking apparatus A telephone locking apparatus. The apparatus includes a base plate and keeper plate which cooperatively define jaw means for clamping the apparatus to the handhold shelf of a telephone desk set. The apparatus also includes a locking plate hingedly connect... | 02/24/1976 |
| 3937900 | Long distance telephone call limiting device A long distance telephone call limiting device is provided which prevents the dialing of a long distance telephone number. The device comprises a stopper mounted on the dial ring at the 0 position. The stopper engages an arrangement of cams and levers whe... | 02/10/1976 |
