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. 04, 1997
Filed:
Aug. 24, 1995
Applicant:
Inventors:
John E Garrison, Spring Lake, MI (US);
Edgar L Garrison, Spring Lake, MI (US);
Robert Anderson, Spring Lake, MI (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
A61C / ; A61C / ;
U.S. Cl.
CPC ...
433 39 ; 433155 ; 433162 ;
Abstract
A matrix retainer apparatus for dental restorations is formed from a resilient, substantially planar main body, a pair of fines extending from the ends of the main body and retention members provided on the tines. The retention members serve to increase the coefficient of friction between the matrix retainer and the tooth or tooth reconstruction element and avoid inadvertent removal of the retainer therefrom. The invention is also directed to a matrix retainer system composed of several matrix retainers adapted for a variety of complex applications.