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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0689669 (1976-05-24) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 15 인용 특허 : 0 |
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 telephone. The base member and cover members
A lockable cover device for push button telephones comprising a base member, means adapted to removably secure said base member to the base of said telephone, a cover member adapted to be mounted over a front, top and rear walls of said telephone, said cover member having a raised portion for receiv
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