Sound level meter
Fernandez , et al. February 7, 1
U.S. patent number D247,161 [Application Number 05/653,653] was granted by the patent office on 1978-02-07 for sound level meter. This patent grant is currently assigned to Donaldson Company, Inc.. Invention is credited to Mario F. Fernandez, Bruce J. Rubin.
| United States Patent | D247,161 |
| Fernandez , et al. | February 7, 1978 |
Sound level meter
Claims
The ornamental design for a sound level meter, substantially as shown.
| Inventors: | Fernandez; Mario F. (Minneapolis, MN), Rubin; Bruce J. (Minneapolis, MN) |
|---|---|
| Assignee: | Donaldson Company, Inc.
(Minneapolis, MN) |
| Appl. No.: | 05/653,653 |
| Filed: | January 30, 1976 |
| Current U.S. Class: | D10/46 |
| Current International Class: | D1004 |
| Field of Search: | ;324/156 ;179/1N ;340/15 ;181/.5 ;D10/46,75,78,57 |
References Cited [Referenced By]
U.S. Patent Documents
| D215238 | September 1969 | Seidel |
| D229968 | January 1974 | Williams |
| D242531 | November 1976 | Guimond |
Other References
|
Industrial Equip. News, 2/75, p. S-33, Sound Level Meter at top right. . Industrial Design, 6/74, p. 61, Elec. Thermometer at top.. |
Primary Examiner: Holtje; Nelson C.
Attorney, Agent or Firm: Merchant; Ralph F.
Description
FIG. 1 is a bottom, left front perspective view of a sound level meter showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right side elevational view thereof.
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