3604566 is referenced by 29 patents and cites 8 patents.

There is herein disclosed a tube-carrying rack comprising an elongated, color-coded, U-shaped base with at least two upstanding sidewalls, track means disposed along the inner surface of the sidewalls, a tube-carrying support member, a plurality of apertures disposed within the support member and locking means associated with the base member and the support member to releasably retain the support member in a desired assembled relationship with the base member.

Title
Test tube holder
Application Number
04/820,795
Publication Number
3604566
Application Date
May 1, 1969
Publication Date
September 14, 1971
Inventor
Smith David H
Rem Douglas J
IPC
A47b 73/00
B65D 25/10
B01L 09/06
B01L 09/00
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