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:
Jan. 06, 1981
Filed:
May. 21, 1979
Applicant:
Inventors:
Hans Broberg, Karlskoga, SE;
Lars Douren, Karlskoga, SE;
Assignee:
Aktiebolaget Bofors, Bofors, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
159 / ; 159D / ; 422307 ;
Abstract
The evaporating tubes of an acid concentrating system are positioned within a double-walled tube unit which directs heating gases over the tube and are supported at their lower ends on a spherical bearing surface which permits relative movement of the components without inducing unacceptable stress levels.
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Broberg, Hans. (1981). Device for an installation of a quartz tube in a device for (U.S. Patent No. 4243477). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4243477
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