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:
Jun. 24, 1986
Filed:
Nov. 03, 1983
Applicant:
Inventor:
Hugh G Robinson, Durham, NC (US);
Assignee:
Duke University, Durham, NC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ; H03B / ;
U.S. Cl.
CPC ...
331-3 ; 331 941 ; 250251 ;
Abstract
An evacuated wall-coated sealed alkali atom cell for an atomic frequency standard, including a cell bulb having an inner wall subjected to cleaning by means of a bakeout step and a r.f. scrubbing step under vacuum, whereupon the inner wall is provided with a deuterated paraffin coating. An alkali atom .sup.87 Rb and/or .sup.85 Rb, and/or .sup.133 Cs is sealed in the cell bulb under vacuum.