Compact radon detector unit

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Description

FIG. 1 is a top perspective view of a compact radon detector unit showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a typical side elevational view thereof;

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D209011 October 1967 Sollima
2938122 May 1960 Cole
3665194 May 1972 Alter
4177378 December 4, 1979 Stevens
4238684 December 9, 1980 Seidel
Foreign Patent Documents
787608 September 1935 FRX
Patent History
Patent number: D269858
Type: Grant
Filed: Feb 12, 1981
Date of Patent: Jul 26, 1983
Assignee: Terradex Corp. (Walnut Creek, CA)
Inventor: H. Ward Alter (Walnut Creek, CA)
Primary Examiner: Nelson C. Holtje
Law Firm: Townsend and Townsend
Application Number: 6/233,818
Classifications
Current U.S. Class: Radiation, E.g., Geiger Counter (D10/47)
International Classification: D1004;