Filter photometer

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Description

FIG. 1 is a front perspective view of a filter photometer showing our new design;

FIG. 2 is a front plan view;

FIG. 3 is a rear plan view;

FIG. 4 is a side view of FIG. 1; and

FIG. 5 is a top plan view of the design shown in FIG. 1.

Referenced Cited
U.S. Patent Documents
D211574 July 1968 Macaulay et al.
D242555 November 1976 McCaa
D245434 August 16, 1977 Beidler et al.
3718439 February 1973 Rosse et al.
3794469 February 1974 Rapoza
Patent History
Patent number: D251775
Type: Grant
Filed: Mar 17, 1978
Date of Patent: May 8, 1979
Assignee: Labora Mannheim GmbH fur Labortechnik (Mannheim)
Inventors: Helmut Schmidt (Mannheim), Heinz-Georg Fuhrer (Rauenberg)
Primary Examiner: Bernard Ansher
Attorney: Arnold Sprung
Application Number: 5/887,901
Classifications
Current U.S. Class: Chemical (12) (D10/81); D24/17
International Classification: D2402;