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:
Aug. 10, 1976
Filed:
May. 22, 1974
Applicant:
Inventors:
Franz Friedl, Vienna, OE;
Erich Kohler, Pottschach, OE;
Hans Holler, Pottschach, OE;
Franz Gebauer, Vienna, OE;
Assignee:
Semperit Aktiengesellschaft, Vienna, OE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B28B / ;
U.S. Cl.
CPC ...
249 65 ; 249178 ;
Abstract
The present invention relates to reusable hollow formwork elements of elastic material which may be used for the concreting of pipelines, and which by filling with a gaseous or liquid medium, can be given compressive resistance. The invention also relates to a method of operating such formwork elements.
Friedl, Franz. (1976). Hollow formwork elements for producing concrete structures (U.S. Patent No. 3973749). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3973749
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile