Hydrometer

- Aquarium Systems, Inc.
Description

FIG. 1 is an enlarged perspective view of the hydrometer showing our new design as viewed from the upper left hand side thereof;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevaation view from the right side of FIG. 3;

FIG. 6 is a side elevation view from the left side of FIG. 3; and,

FIG. 7 is a rear elevation view thereof.

Referenced Cited
U.S. Patent Documents
4080834 March 28, 1978 Beauchemin, Jr.
4708017 November 24, 1987 Kownurko
Patent History
Patent number: D384299
Type: Grant
Filed: Mar 22, 1996
Date of Patent: Sep 30, 1997
Assignee: Aquarium Systems, Inc. (Mentor, OH)
Inventors: Edmund J. Mowka, Jr. (Mentor, OH), Thomas A. Frakes (Mentor, OH)
Primary Examiner: Antoine Duval Davis
Law Firm: Renner, Otto, Boisselle & Sklar, P.L.L.
Application Number: 0/52,087
Classifications
Current U.S. Class: Specific Gravity (8) (D10/84)
International Classification: 1004;