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:
Jun. 19, 2007
Filed:
Oct. 07, 2002
Applicants:
William R. Kennedy, Taylorville, IL (US);
John M. Kennedy, Taylorville, IL (US);
Inventors:
William R. Kennedy, Taylorville, IL (US);
John M. Kennedy, Taylorville, IL (US);
Assignee:
Jack Kennedy Metal Products & Buildings, Inc., Taylorville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21F 1/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mine air crossing includes opposite side walls and a deck extending from side wall to side wall. Each side wall includes a plurality of sections assembled side-by-side and interconnected by quick-connections. Similarly, each deck may include deck sections assembled side-by-side and interconnected by quick-connections.