Check valve

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Information

Patent Grant
D269633

References
Source

Patent Number
D269,633
Date Filed
Monday, September 8, 1980
45 years ago
Date Issued
Tuesday, July 5, 1983
43 years ago

Inventors
- Allan H. Willinger
- Tsuyoshi Itakura
Examiners
- Ansher; Bernard
Agents
- Goodman & Teitelbaum

US Classifications
- D23 - Environmental heating and cooling
- D24 - Medical and laboratory equipment
Field of Search
- US
- D23 22
- D23 19
- D23 4
- 137 846
- 119 5
- 119 3
- D24 53
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a check valve, substantially as shown.

US Referenced Citations (6)

Number	Name	Date	Kind
D202701	Davis, Jr.	Nov 1965
D203323	Scaramucci	Dec 1965
D248485	Strauss et al.	Jul 1978
3303819	Wade	Feb 1967
3967645	Gregory	Jul 1976
4067414	Funke	Jan 1978