Precision bore fused silica tubing with tapered section

- J&W Scientific, Inc.
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Description

FIG. 1 is a front elevation of a precision bore fused silica tubing with tapered section, showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a longitudinal cross-section taken on line 4--4 of FIG. 3.

Referenced Cited
U.S. Patent Documents
D262573 January 5, 1982 Wohlers
3775309 November 1973 Ito et al.
3796657 March 1974 Pretorius
4169790 October 2, 1979 Pretorius
Other references
  • Fisher Scientific 1981, .COPYRGT.1980, p. 193 Chromatography Jar, Round Pyrex, Cat. No. 05-719-8A.
Patent History
Patent number: D274257
Type: Grant
Filed: Apr 24, 1981
Date of Patent: Jun 12, 1984
Assignee: J&W Scientific, Inc. (Rancho Cordova, CA)
Inventors: Rand G. Jenkins (Fair Oaks, CA), Norman W. Wohlers (Davis, CA)
Primary Examiner: Bernard Ansher
Law Firm: Townsend and Townsend
Application Number: 6/257,180
Classifications
Current U.S. Class: D24/99; D24/8