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Patent
   D308833
Priority
Nov 20 1986
Filed
Nov 20 1986
Issued
Jun 26 1990
Expiry
Jun 26 2004
Inventors
Mowka, Jr.…
Assg.orig
AQUARIUM S…
Assg.curr
AQUARIUM S…
Entity
unknown
Referenced by
3
References
9
Maint.:
n/a
The ornamental design for a comparator for chemical testing of water, as shown and described.

FIG. 1 is a front elevational view of a comparator for chemical testing of water showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a right side elevational view;

FIG. 5 is a top plan view; and

FIG. 6 is a bottom plan view thereof.
INVENTORS:

Mowka, Jr., Edmund J.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
7319037, May 14 2002 Fluid tester and method of use
D335464, Nov 28 1989 PALINTEST LTD Analytical instrument for testing parameters of pool water
D347188, Oct 25 1991 LUSTER LEAF PRODUCTS, INC Soil test kit
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1794134,
3381572,
3604812,
3773425,
186271,
232037,
232038,
D247821, Jun 15 1976 GPS POOL SUPPLY, INC A CORPORATION OF CA Color comparator for testing swimming pools
DE2742314,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Nov 11 1986MOWKA, EDMUND J JR AQUARIUM SYSTEMS, INC , A CORP OF OHASSIGNMENT OF ASSIGNORS INTEREST 0046320885 pdf
Nov 20 1986Aquarium Systems, Inc.(assignment on the face of the patent)
Feb 07 1996AQUARIUM SYSTEMS, INC AQUARIUM SYSTEMS, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0078030981 pdf
Feb 07 1996AQUARIUM SYSTEMS CORPORATIONNATIONSCREDIT COMMERCIAL CORPORATION, AS AGENTASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0079690800 pdf
Dec 30 1996AQUARIUM SYSTEMS, INC , OHIO CORPORATION AQUARIUM SYSTEMS, INC DELAWARE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0082960703 pdf
Jun 27 1997AQUARIUM SYSTEMS, INC NATIONSCREDIT COMMERCIAL CORPORATIONSECURITY INTEREST SEE DOCUMENT FOR DETAILS 0086130853 pdf
Jul 08 1999NATIONSCREDIT COMMERCIAL CORPORATIONAQUARIUM SYSTEMS, INC RELESE OF A SECURITY INTEREST0103950598 pdf
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