Shell encased pool chemical tablet

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Information

Patent Grant
D325619

References
Source

Patent Number
D325,619
Date Filed
Monday, February 27, 1989
35 years ago
Date Issued
Tuesday, April 21, 1992
32 years ago

Inventors
- John M. Casberg
Original Assignees
- Olin Corporation
Examiners
- Lucas; Susan J.
- Tung; M. H.

US Classifications
- D23 - Environmental heating and cooling
- D24 - Medical and laboratory equipment
Field of Search
- US
- D28 1-3
- D28 82
- D28 81
- D01 100
- D01 127
- D23 207-208
- 424 451
- 424 457
- 424 464
- 424 465
- 424 468-470
- 424 472
- 424 474
- 426 97-98
- 252 90
- 252 92
- 252 134
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a shell encased pool chemical tablet, as shown and described.

US Referenced Citations (10)

Number	Name	Date	Kind
31133	Lantz	Jul 1899
D258091	Reed et al.	Jan 1981
D271534	Huzinec	Nov 1983
D283649	Calberg	Apr 1986
2711346	Irwin et al.	Jun 1955
3856932	May	Dec 1974
4215104	Ullman et al.	Jul 1980
4333752	Thies et al.	Jun 1982
4350666	Klutts	Sep 1982
4374563	Alexander	Feb 1983

Non-Patent Literature Citations (1)

Entry
USSN 191,640 filed May 9, 1988 entitled "Encased Pool Chemical Tablet with Domed Ends" by John M. Casberg.