U.S. patent number D753,074 [Application Number D/488,510] was granted by the patent office on 2016-04-05 for frequency diffuser.
The grantee listed for this patent is Dennis Kliegle, Gary Gotlieb Unterschuetz, David C. Weber. Invention is credited to Dennis Kliegle, Gary Gotlieb Unterschuetz, David C. Weber.
United States Patent |
D753,074 |
Kliegle , et al. |
April 5, 2016 |
Frequency diffuser
Claims
CLAIM The ornamental design for a frequency diffuser, as shown and
described.
Inventors: |
Kliegle; Dennis (Holcombe,
WI), Unterschuetz; Gary Gotlieb (Ladysmith, WI), Weber;
David C. (Springbrook, WI) |
Applicant: |
Name |
City |
State |
Country |
Type |
Kliegle; Dennis
Unterschuetz; Gary Gotlieb
Weber; David C. |
Holcombe
Ladysmith
Springbrook |
WI
WI
WI |
US
US
US |
|
|
Appl.
No.: |
D/488,510 |
Filed: |
April 21, 2014 |
Current U.S.
Class: |
D13/199 |
Current International
Class: |
1399 |
Field of
Search: |
;D13/101,110,118,123,184,199 ;D14/155,204,217,240
;181/198,199,293,296 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Holland; Derrick
Attorney, Agent or Firm: Skinner & Associates Skinner;
Joel D.
Description
FIG. 1 is a front perspective view of a frequency diffuser showing
our new design.
FIG. 2 is a back perspective view thereof.
FIG. 3 is a top view thereof.
FIG. 4 is a front view thereof.
FIG. 5 is a side view thereof; and,
FIG. 6 is a back view thereof.
The design is for a Quadratic Residue Diffuser (QRD) acoustic
diffuser which is used to control reflection of sound in a
listening environment.
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