Cell scraping device

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Description

FIG. 1 is a plan view of the cell scraper showing my new design;

FIG. 2 is a side elevation of the cell scraper;

FIG. 3 is an elevation view from the left end of FIG. 2;

FIG. 4 is an elevation view from the right end of FIG. 2.

Referenced Cited
U.S. Patent Documents
D210757 April 1968 Michel
D239042 March 1976 Freake et al.
D251013 February 6, 1979 Kettel
3945372 March 23, 1976 Milan et al.
4004981 January 25, 1977 Hurni et al.
4054490 October 18, 1977 Vesterberg
4065359 December 27, 1977 Hurni
Patent History
Patent number: D261807
Type: Grant
Filed: May 7, 1979
Date of Patent: Nov 10, 1981
Assignee: Merck & Co., Inc. (Rahway, NJ)
Inventors: Roy W. Grabner (Blue Bell, PA), William J. McAleer (Ambler, PA), Edward L. Paul (Chatham Township, Morris County, NJ)
Primary Examiner: Bernard Ansher
Attorneys: Donald J. Perrella, Hesna J. Pfeiffer
Application Number: 6/36,277
Classifications
Current U.S. Class: D24/28
International Classification: D2402;