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:
Mar. 11, 2008
Filed:
Jun. 28, 2004
Applicants:
David Ling, Taichung, TW;
Hsien-chung Tuan-mu, Taichung, TW;
Inventors:
David Ling, Taichung, TW;
Hsien-Chung Tuan-Mu, Taichung, TW;
Assignee:
Easco Hand Tools, Inc., Simsbury, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.