Old blueprint Synonyms

Definitions for Old

(adjective) being of advanced years and especially past middle age
(adjective) dating or surviving from the distant past
(adjective) having been such at some previous time

OB abbreviation

OB is an abbreviation for Old Blueprint

What does OB stand for?

OB stands for "Old Blueprint"

Blueprint replaced

old prototype

Definitions for Blueprint

(noun) a method worked out in advance for achieving some objective
(verb) to work out the details of (something) in advance
(noun) something intended as a guide for making something else