Collimator test target

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Description

FIG. 1 is a front elevation view of a collimator test target showing my new design.

FIG. 2 is a bottom plan view thereof, the top being identical thereto;

FIG. 3 is a rear elevation view thereof; and

FIG. 4 is a right side elevation view thereof, the left side being identical thereto.

Referenced Cited
U.S. Patent Documents
D203518 January 1966 Rosenvold
1626306 April 1927 St. John
3028493 April 1962 Takahashi
3419329 December 1968 Vogecey
3614238 October 1971 Stites
3917954 November 1975 Boge
3920335 November 1975 Seehase
4090080 May 16, 1978 Tosswill
Patent History
Patent number: D259406
Type: Grant
Filed: Dec 20, 1978
Date of Patent: Jun 2, 1981
Assignee: Radiation Measurements, Inc. (Middleton, WI)
Inventor: Donald R. Jacobson (Middleton, WI)
Primary Examiner: Nelson C. Holtje
Law Firm: Isaksen, Lathrop, Esch, Hart & Clark
Application Number: 5/971,422
Classifications
Current U.S. Class: Measuring, Regulating Or Indicating Instrument, Or Casing (D10/46)
International Classification: D1004;