Stopper for test tubes and the like

Description

FIG. 1 is a perspective view of a stopper for test tube and the like embodying my new design;

FIG. 2 is a side elevational view thereof with slot showing;

FIG. 3 is another side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a vertical sectional view taken along line 6--6 of FIG. 4.

Referenced Cited
U.S. Patent Documents
D248873 August 8, 1978 Raitto
D254446 March 11, 1980 Raitto
3005564 October 1961 Weichselbaum
3254785 June 1966 Lovell
3473685 October 1969 Karlan
Other references
  • Fisher Scientific, Catalog 81, .COPYRGT.1980, p. 1189, Polypropylene Stopper.
Patent History
Patent number: D272856
Type: Grant
Filed: Feb 16, 1982
Date of Patent: Feb 28, 1984
Assignee: Becton Dickinson and Company (Paramus, NJ)
Inventor: Edward P. Percarpio (North Haledon, NJ)
Primary Examiner: Bernard Ansher
Attorney: R. P. Grindle
Application Number: 6/349,337
Classifications
Current U.S. Class: D24/99; D21/29; D/9385