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:
Dec. 21, 1982
Filed:
Feb. 23, 1981
Applicant:
Inventor:
Gilmore T Schjeldahl, Minnetonka, MN (US);
Assignee:
Cathedyne Corporation, Minnetonka, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417394 ; 1282 / ; 417479 ;
Abstract
A perfusion pump comprising an assembly of inner and outer tubes interconnected by a field of perforations, a chamber configured to closely contain the tube assembly, valving apparatus for substantially closing the ends of the inner tube by compression against the chamber, and sources of positive and negative pressure gas selectively applicable against the wall of the outer tube.
Schjeldahl, Gilmore. (1982). Surgical pumping operation (U.S. Patent No. 4364716). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4364716
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile