Duct close elbow

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Information

Patent Grant
D342782

References
Source

Patent Number
D342,782
Date Filed
Friday, January 31, 1992
33 years ago
Date Issued
Tuesday, December 28, 1993
31 years ago

Inventors
- Charles R. Kenrick
- Charles B. Anderson
Original Assignees
- Builder's Best, Inc.
Examiners
- Largen; James R.
Agents
- Price, Heneveld, Cooper, DeWitt & Litton

US Classifications
- D23 - Environmental heating and cooling
Field of Search
- US
- D23 262
- D23 263
- D23 393
- D23 394
- 285 163-165
- 285 168
- 285 179
- 285 181-183
- 285 226
- 285 424
- 285 903
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a duct close elbow, as shown and described.

US Referenced Citations (14)

Number	Name	Date	Kind
D31835	Kuehn	Nov 1899
D33258	Kelly	Sep 1900
D234463	Ahlrot	Mar 1975
D335174	Anderson et al.	Apr 1993
458994	Bieber	Sep 1891
925762	Eager	Jun 1909
2086007	Tompkins	Jul 1937
2131804	Holub	Oct 1938
2348455	Daudelin	May 1944
2392220	Bruhn et al.	Jan 1946
2823703	Nusser, Jr.	Feb 1958
3185506	Szlashta	May 1965
5121948	Anderson et al.	Jun 1992
5145217	Anderson et al.	Sep 1992