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:
May. 28, 2002
Filed:
Mar. 20, 2000
Applicant:
Inventors:
Paul E. Miller, Spring Lake, MI (US);
Glen J. Seward, Cincinnati, OH (US);
Paul A. Bogdans, Grand Haven, MI (US);
Assignee:
R.A. Miller Industries, Inc., Grand Haven, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 1/213 ; H04M 1/03 ; H04B 1/48 ;
U.S. Cl.
CPC ...
H01P 1/213 ; H04M 1/03 ; H04B 1/48 ;
Abstract
A multiplexer circuit adapted to receive standard cellular telephone signals and PCS signals without user intervention comprises two filter circuits. The first filter circuit presents a high impedance to signals outside the standard cellular frequency range from one antenna and the second circuit presents a high impedance to signals outside the higher PCS frequency range from a second antenna. A cell phone adapted to receive both frequency ranges will automatically detect the appropriate signal.