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:
Apr. 18, 1989
Filed:
Feb. 10, 1986
Applicant:
Inventors:
Charles W Bricher, St. Paul, MN (US);
Mark E Snetting, Eden Prairie, MN (US);
Assignee:
Tennant Company, Minneapolis, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
134 28 ; 156625 ; 156635 ; 252 794 ; 252143 ; 427136 ; 427309 ; 15320 ; 15321 ; 15345 ; 15346 ; 15347 ; 15353 ; 15363 ;
Abstract
This invention is concerned with a machine and method for automatically removing a curing film or membrane from a concrete floor surface and etching that surface in preparation for applying a surface coating and doing this in less time than has heretofore been required for such floor preparation.