Ring for a manhole cover

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Information

Patent Grant
D319883

References
Source

Patent Number
D319,883
Date Filed
Wednesday, October 12, 1988
36 years ago
Date Issued
Tuesday, September 10, 1991
33 years ago

Inventors
- Martin C. Pettesch
- Robert O. Andreasen
Original Assignees
- Universal Valve Co., Inc.
Examiners
- Word; A. Hugo
- Clark; Doris
Agents
- Eckert Seamans Cherin & Mellott

US Classifications
- D25 - Building units and construction elements
Field of Search
- US
- D25 36
- 404 25
- 404 26
- 052 19-21
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a ring for a manhole cover, as shown and described.

US Referenced Citations (5)

Number	Name	Date	Kind
D247254	Brown et al.	Feb 1978
3858998	Larson et al.	Jan 1975
4015373	Boissier	Apr 1977
4121390	Hall et al.	Oct 1978
4203686	Bowman	May 1980