Derrold D Johnson
Radiology at 185 Ter, Miami, FL

License number
Florida 24071
Effective Date
Jan 1, 1995
Expiration Date
Dec 31, 1994
Category
Health Care
Type
Radiologic Technology
Address
Address
1145 NW 185Th Ter, Miami, FL 33169

Professional information

Derrold Johnson Photo 1

Programmed Test Tube Rack For Manually Performing Medical Diagnostic Assays

US Patent:
3948606, Apr 6, 1976
Filed:
Jan 26, 1973
Appl. No.:
5/326975
Inventors:
Derrold D. Johnson - Miami FL
International Classification:
B01L 906, G01N 3316
US Classification:
23259
Abstract:
A test tube rack having columns and rows for manually performing medical diagnostic assays which require various sequential operations. The top face of the rack has indicia such as color strips and written directions to provide a program of operations which is to be followed in a particular assay. The individual test tubes are manually progressed in columns from row to row as the programmed sequence of operations is carried out. The top face may be replaced by other top plates programmed for other different assays.