Frequency diffuser
Kliegle , et al. April 5, 2
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) | ||||||||||
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| Applicant: |
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| 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
| D208983 | October 1967 | Winston |
| D317909 | July 1991 | Fujioka |
| D403301 | December 1998 | Lehmann |
| D443842 | June 2001 | Kuwabara |
| D471172 | March 2003 | Greenway |
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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