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. 25, 2004
Filed:
Jun. 23, 1997
Applicant:
Inventors:
Erik A. Ramberg, San Francisco, CA (US);
Robert K. Froelich, Sunnyvale, CA (US);
Forrest F. Fulton, Los Altos Hills, CA (US);
Assignee:
SchlumbergerSema Inc., Alpharetta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/69 ;
U.S. Cl.
CPC ...
H04B 1/69 ;
Abstract
A digitally sampled spread spectrum signal is received, despread, and accumulated at a center frequency lower than the sampling rate and higher than zero.