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. 21, 2006
Filed:
May. 25, 2004
Applicants:
Chengshing Lai, Taipei, TW;
Qiang Fan, Nanking, CN;
Inventors:
Chengshing Lai, Taipei, TW;
Qiang Fan, Nanking, CN;
Assignee:
Inventec Appliances Corp., Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of automatically switching in an on-hook state suitable for a telephone system is provided. The method automatically switches a spring circuit from an off-hook state to the on-hook state when the telephone system operates in an abnormal use state for a unreasonably long period of time. Therefore, the telephone system can be switched back to the on-hook state when the mouthpiece is unintentionally off the hook so the missing of the phone call can be effectively avoided.