The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 1990
Filed:
Mar. 02, 1989
Applicant:
Inventors:
Yukihiro Shimura, Tokyo, JP;
Noboru Saegusa, Tokyo, JP;
Yuichiro Takagawa, Tokyo, JP;
Shoichi Tozuka, Kanagawa, JP;
Yasushi Hatakeyama, Saitama, JP;
Assignees:
NEC Corporation, Tokyo, JP;
Nippon Telegraph & Telephone Co., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
379 61 ; 379 58 ; 455127 ;
Abstract
A radio telephone having a base unit connected to a wired telephone line, a handset unit connectable to the base unit over a radio channel and provided with a hook switch, and a charger for selectively charging the handset unit. The handset unit is automatically controlled to either an on-hook state or an off-hook state when removed from the charger, depending upon the hook state in which the handset unit has been held before the start of charging.