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:
Feb. 03, 1976
Filed:
Jul. 31, 1974
Applicant:
Inventor:
Hartwig Ruell, Otterfing, DT;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Primary Examiner:
Int. Cl.
CPC ...
G03H / ;
U.S. Cl.
CPC ...
350-35 ; 1791 / ;
Abstract
An apparatus for sequential data storage employing a coherent light source from which an object wave and a reference wave source symmetrical to one another are created, each wave being directed through a spherical lens and then a plane-parallel, transparent plate to a moving storage medium for recording. Each of the plane-parallel transparent plates may be fixed selectively either normal to the path of its respective wave or obliquely to the path.