Heat recirculator

Follow

Information

Patent Grant
D252641

References
Source

Patent Number
D252,641
Date Filed
Wednesday, February 9, 1977
47 years ago
Date Issued
Tuesday, August 14, 1979
45 years ago

Inventors
- Ralph M. LaZar
Original Assignees
- BROAN MFG. CO., INC.
Examiners
- Largen; James R.
Agents
- Fetterley; Daniel D.

US Classifications
- D23 - Environmental heating and cooling
- 098
Field of Search
- US
- D23 83
- D23 90
- D23 111-119
- D23 127-167
- 098 33 R
- 098 33 A
International Classifications
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a heat recirculator, as shown.

US Referenced Citations (6)

Number	Name	Date	Kind
D173531	Halbeisen	Nov 1954
D176137	Jenks	Nov 1955
D238278	Baker, Jr.	Dec 1975
2251725	Warren	Aug 1941
3347025	Wiley	Oct 1967
3827342	Hughes	Aug 1974