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:
Oct. 03, 2006
Filed:
Nov. 15, 2002
Applicants:
Brandon L. Cordts, Cottage Grove, MN (US);
Stephen A. Miller, St. Paul, MN (US);
Matthew D. Reier, St. Paul, MN (US);
Inventors:
Brandon L. Cordts, Cottage Grove, MN (US);
Stephen A. Miller, St. Paul, MN (US);
Matthew D. Reier, St. Paul, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04C 2/52 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fire stopping apparatus for fire stopping a through-penetration includes fire stop material arranged within the through-penetration, a frame arranged adjacent the top opening of the through-penetration, and a plurality of slats arranged on the frame adjacent the through-penetration top opening.