Electronic measuring/monitoring instrument

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Description

FIG. 1 is a top, front and right side isometric view of an electronic measuring/monitoring instrument showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof, the undisclosed opposite side being a mirror image;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D251370 March 20, 1979 Katzmann et al.
D258360 February 24, 1981 Mourad
D265384 July 13, 1982 Kay
D289504 April 28, 1987 McCain et al.
D308645 June 19, 1990 Hughes et al.
D326235 May 19, 1992 Bastijanic et al.
D329988 October 6, 1992 Burrell et al.
4107459 August 15, 1978 Stamper
4660126 April 21, 1987 Koster et al.
Other references
  • Fordham; 1988 Vol. 14, No. 2; p. 31; Model 2831-31/2 Digit Lab DMM; Upper Right of page. Fordham; 1988 vol. 14, No. 2; p. 28, Model 1822, 175 Mhz Universal Counter; 3rd Item down on page.
Patent History
Patent number: D343800
Type: Grant
Filed: Oct 11, 1991
Date of Patent: Feb 1, 1994
Assignee: Keithley Instruments, Inc. (Cleveland, OH)
Inventors: Robert G. Spinks (Twinsburg, OH), David J. Kruszewski (Parma, OH), Michael P. Minneman (Hudson, OH), Kenneth A. Reindel (Broadview Heights, OH)
Primary Examiner: Bernard Ansher
Assistant Examiner: Mitchell Siegel
Law Firm: Pearne, Gordon, McCoy & Granger
Application Number: 7/775,258
Classifications
Current U.S. Class: Electrical Property (D10/75)