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:
Nov. 30, 1976
Filed:
Jun. 30, 1975
Applicant:
Inventor:
Hugo F Cypser, Long Branch, NJ (US);
Assignee:
Wheelock Signals, Inc., Long Branch, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
179184 ;
Abstract
A grille for protecting a loudspeaker or the like comprises two substantially identical parts, each part being formed with bars defining a plurality of openings. When the two parts are placed together in back-to-back and head-to-toe relation, the openings in one part are out of register with the openings in the other part. This provides a plurality of circuitous paths through the grille for the passage of sound or the like, but there are no straight-line paths through the grille for the passage of vandalizing implements or the like.