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. 18, 1977
Filed:
Oct. 06, 1975
Applicant:
Inventor:
Leo Coopersmith, Ivoryton, CT (US);
Assignee:
Leigh Products, Inc., Coopersville, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05C / ;
U.S. Cl.
CPC ...
292264 ; 2923363 ; 70 93 ;
Abstract
A door security and release system wherein a door safety chain or similar linkage is tautly held in door securing condition against any efforts to release it from outside the door, with release means associated with the inside door operating member and adapted to be actuated by turning the door operating member.