Quartz fin heat retaining tube

- Tokyo Electron Limited
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Description

FIG. 1 a perspective view of a quartz fin heat retaining tube.

FIG. 2 is a top plan view thereof.

FIG. 3 a front elevational view thereof, the rear elevational view being a mirror image of the front view.

FIG. 4 a left side view thereof.

FIG. 5 a right side view thereof.

FIG. 6 a bottom plan view thereof.

FIG. 7 a cross sectional view thereof taken along line 7--7 in FIG. 2; and,

FIG. 8 a cross sectional view thereof taken along line 8--8 in FIG. 3.

Referenced Cited
U.S. Patent Documents
D361752 August 29, 1995 Yamaga
D380454 July 1, 1997 Ewai et al.
5303671 April 19, 1994 Fondo et al.
5482558 January 9, 1996 Watanabe et al.
Patent History
Patent number: D426521
Type: Grant
Filed: Jul 24, 1997
Date of Patent: Jun 13, 2000
Assignee: Tokyo Electron Limited (Tokyo-To)
Inventor: Katsutoshi Ishii (Kanagawa)
Primary Examiner: Lisa Lichtenstein
Law Firm: Ladas & Parry
Application Number: 0/74,277
Classifications
Current U.S. Class: Semiconductor, Transistor Or Integrated Circuit (24) (D13/182)
International Classification: 1303;